diff --git a/app/db/src/app/common/bible-reference.spec.ts b/app/db/src/app/common/bible-reference.spec.ts
index 85197baf..ccb9a77e 100644
--- a/app/db/src/app/common/bible-reference.spec.ts
+++ b/app/db/src/app/common/bible-reference.spec.ts
@@ -32,9 +32,7 @@ describe('Reference', () => {
   });
 
   it('Should parse the reference: 2 Samuel 5:5-6:5', () => {
-    expect(new BibleReference('II sam 5:5-6:5').toString()).toBe(
-      '2 Samuel 5:5 - 6:5'
-    );
+    expect(new BibleReference('II sam 5:5-6:5').toString()).toBe('2 Samuel 5:5 - 6:5');
   });
 
   const booknames = [
@@ -268,22 +266,14 @@ describe('Reference', () => {
       expect(book.name).toBe(bk.actual);
 
       for (let i = 1; i < book.lastChapter; i++) {
-        expect(
-          new BibleReference(
-            bk.abbr + ' ' + i + ':3-' + (i + 1) + ':6'
-          ).toString()
-        ).toBe(bk.actual + ' ' + i + ':3 - ' + (i + 1) + ':6');
+        expect(new BibleReference(bk.abbr + ' ' + i + ':3-' + (i + 1) + ':6').toString()).toBe(
+          bk.actual + ' ' + i + ':3 - ' + (i + 1) + ':6'
+        );
       }
 
-      expect(new BibleReference(bk.abbr + ' 1:4-2:5').toString()).toBe(
-        bk.actual + ' 1:4 - 2:5'
-      );
-      expect(new BibleReference(bk.abbr + ' 1:1 - 5').toString()).toBe(
-        bk.actual + ' 1:1 - 5'
-      );
-      expect(new BibleReference(bk.abbr + ' 1:4 - 5').toString()).toBe(
-        bk.actual + ' 1:4 - 5'
-      );
+      expect(new BibleReference(bk.abbr + ' 1:4-2:5').toString()).toBe(bk.actual + ' 1:4 - 2:5');
+      expect(new BibleReference(bk.abbr + ' 1:1 - 5').toString()).toBe(bk.actual + ' 1:1 - 5');
+      expect(new BibleReference(bk.abbr + ' 1:4 - 5').toString()).toBe(bk.actual + ' 1:4 - 5');
     });
   }
 
@@ -297,31 +287,70 @@ describe('Reference', () => {
 });
 
 describe('Reference Overlap Detection', () => {
-  //  it('Different books dont overlap', () => {
-  //    const leftRf = new BibleReference('Gen 1:1-5');
-  //    const rightRef = new BibleReference('Exodus 1:3-7');
-  //
-  //    expect(BibleReference.overlap(leftRf, rightRef)).toBe(Overlap.None);
-  //  });
-  //
-  //  it('Different chapters dont overlap', () => {
-  //    const leftRef = new BibleReference('Gen 1:1-5');
-  //    const rightRef = new BibleReference('Gen 2:1-5');
-  //
-  //    expect(BibleReference.overlap(leftRef, rightRef)).toBe(Overlap.None);
-  //  });
-  //
-  //  it('Detects Left intersects the front of Right', () => {
-  //    const leftRef = new BibleReference('Gen 1:1-5');
-  //    const rightRef = new BibleReference('Gen 1:4-5');
-  //
-  //    expect(BibleReference.overlap(leftRef, rightRef)).toBe(Overlap.Intersect);
-  //  });
+  it('Different books dont overlap', () => {
+    const leftRef = new BibleReference('Gen 1:1-5');
+    const rightRef = new BibleReference('Exodus 1:3-7');
+
+    expect(BibleReference.overlap(leftRef, rightRef)).toBe(Overlap.None);
+    expect(BibleReference.mergeReference(leftRef, rightRef, Overlap.Intersect)).toBeNull();
+  });
+
+  it('Different chapters dont overlap', () => {
+    const leftRef = new BibleReference('Gen 1:1-5');
+    const rightRef = new BibleReference('Gen 2:1-5');
+
+    expect(BibleReference.overlap(leftRef, rightRef)).toBe(Overlap.None);
+    expect(BibleReference.mergeReference(leftRef, rightRef, Overlap.Intersect)).toBeNull();
+    expect(BibleReference.mergeReference(leftRef, rightRef, Overlap.None)).toBeNull();
+  });
+
+  it('Detects Left intersects the front of Right', () => {
+    const leftRef = new BibleReference('Gen 1:1-5');
+    const rightRef = new BibleReference('Gen 1:4-6');
+
+    expect(BibleReference.overlap(leftRef, rightRef)).toBe(Overlap.Intersect);
+    expect(BibleReference.mergeReference(leftRef, rightRef, Overlap.Intersect)).toEqual(new BibleReference('Gen 1:1-6'));
+    expect(BibleReference.mergeReference(leftRef, rightRef, Overlap.Subset)).toBeNull();
+    expect(BibleReference.mergeReference(leftRef, rightRef, Overlap.None)).toBeNull();
+  });
 
   it('Detects Right intersects the front of left', () => {
     const leftRef = new BibleReference('Gen 1:7-10');
-    const rightRef = new BibleReference('Gen 1:5-8');
+    const rightRef = new BibleReference('Gen 1:1-8');
 
     expect(BibleReference.overlap(leftRef, rightRef)).toBe(Overlap.Intersect);
+    expect(BibleReference.mergeReference(leftRef, rightRef, Overlap.Intersect)).toEqual(new BibleReference('Gen 1:1-10'));
+    expect(BibleReference.mergeReference(leftRef, rightRef, Overlap.Subset)).toBeNull();
+    expect(BibleReference.mergeReference(leftRef, rightRef, Overlap.None)).toBeNull();
   });
-});
\ No newline at end of file
+
+  it('Detects Left embedded in Right', () => {
+    const leftRef = new BibleReference('Gen 1:2-8');
+    const rightRef = new BibleReference('Gen 1:1-10');
+
+    expect(BibleReference.overlap(leftRef, rightRef)).toBe(Overlap.Subset);
+    expect(BibleReference.mergeReference(leftRef, rightRef, Overlap.Intersect)).toEqual(new BibleReference('Gen 1:1-10'));
+    expect(BibleReference.mergeReference(leftRef, rightRef, Overlap.Subset)).toEqual(new BibleReference('Gen 1:1-10'));
+    expect(BibleReference.mergeReference(leftRef, rightRef, Overlap.None)).toBeNull();
+  });
+
+  it('Detects Both are Equal', () => {
+    const leftRef = new BibleReference('Gen 1:1-10');
+    const rightRef = new BibleReference('Gen 1:1-10');
+
+    expect(BibleReference.overlap(leftRef, rightRef)).toBe(Overlap.Subset);
+    expect(BibleReference.mergeReference(leftRef, rightRef, Overlap.Intersect)).toEqual(new BibleReference('Gen 1:1-10'));
+    expect(BibleReference.mergeReference(leftRef, rightRef, Overlap.Subset)).toEqual(new BibleReference('Gen 1:1-10'));
+    expect(BibleReference.mergeReference(leftRef, rightRef, Overlap.None)).toEqual(new BibleReference('Gen 1:1-10'));
+  });
+
+  it('Detects Right embedded in Left', () => {
+    const leftRef = new BibleReference('Gen 1:1-10');
+    const rightRef = new BibleReference('Gen 1:2-8');
+
+    expect(BibleReference.overlap(leftRef, rightRef)).toBe(Overlap.Subset);
+    expect(BibleReference.mergeReference(leftRef, rightRef, Overlap.Intersect)).toEqual(new BibleReference('Gen 1:1-10'));
+    expect(BibleReference.mergeReference(leftRef, rightRef, Overlap.Subset)).toEqual(new BibleReference('Gen 1:1-10'));
+    expect(BibleReference.mergeReference(leftRef, rightRef, Overlap.None)).toBeNull();
+  });
+});
diff --git a/app/db/src/app/common/bible-reference.ts b/app/db/src/app/common/bible-reference.ts
index 9ff4161b..599d058c 100644
--- a/app/db/src/app/common/bible-reference.ts
+++ b/app/db/src/app/common/bible-reference.ts
@@ -19,7 +19,59 @@ export class BibleReference {
       longName: 'Book of Genesis',
       bookNumber: 1,
       lastChapter: 66,
-      chapters: [0, 31, 25, 24, 26, 32, 22, 24, 22, 29, 32, 32, 20, 18, 24, 21, 16, 27, 33, 38, 18, 34, 24, 20, 67, 34, 35, 46, 22, 35, 43, 55, 32, 20, 31, 29, 43, 36, 30, 23, 23, 57, 38, 34, 34, 28, 34, 31, 22, 33, 26],
+      chapters: [
+        0,
+        31,
+        25,
+        24,
+        26,
+        32,
+        22,
+        24,
+        22,
+        29,
+        32,
+        32,
+        20,
+        18,
+        24,
+        21,
+        16,
+        27,
+        33,
+        38,
+        18,
+        34,
+        24,
+        20,
+        67,
+        34,
+        35,
+        46,
+        22,
+        35,
+        43,
+        55,
+        32,
+        20,
+        31,
+        29,
+        43,
+        36,
+        30,
+        23,
+        23,
+        57,
+        38,
+        34,
+        34,
+        28,
+        34,
+        31,
+        22,
+        33,
+        26,
+      ],
     },
     {
       bookNumber: 2,
@@ -27,7 +79,49 @@ export class BibleReference {
       name: 'Exodus',
       longName: 'Book of Exodus',
       lastChapter: 40,
-      chapters: [0, 22, 25, 22, 31, 23, 30, 25, 32, 35, 29, 10, 51, 22, 31, 27, 36, 16, 27, 25, 26, 36, 31, 33, 18, 40, 37, 21, 43, 46, 38, 18, 35, 23, 35, 35, 38, 29, 31, 43, 38],
+      chapters: [
+        0,
+        22,
+        25,
+        22,
+        31,
+        23,
+        30,
+        25,
+        32,
+        35,
+        29,
+        10,
+        51,
+        22,
+        31,
+        27,
+        36,
+        16,
+        27,
+        25,
+        26,
+        36,
+        31,
+        33,
+        18,
+        40,
+        37,
+        21,
+        43,
+        46,
+        38,
+        18,
+        35,
+        23,
+        35,
+        35,
+        38,
+        29,
+        31,
+        43,
+        38,
+      ],
     },
     {
       bookNumber: 3,
@@ -35,7 +129,36 @@ export class BibleReference {
       abbreviation: 'Lev',
       longName: 'Leviticus',
       lastChapter: 27,
-      chapters: [0, 17, 16, 17, 35, 19, 30, 38, 36, 24, 20, 47, 8, 59, 57, 33, 34, 16, 30, 37, 27, 24, 33, 44, 23, 55, 46, 34],
+      chapters: [
+        0,
+        17,
+        16,
+        17,
+        35,
+        19,
+        30,
+        38,
+        36,
+        24,
+        20,
+        47,
+        8,
+        59,
+        57,
+        33,
+        34,
+        16,
+        30,
+        37,
+        27,
+        24,
+        33,
+        44,
+        23,
+        55,
+        46,
+        34,
+      ],
     },
     {
       bookNumber: 4,
@@ -43,7 +166,45 @@ export class BibleReference {
       abbreviation: 'Num',
       longName: 'Book of Numbers',
       lastChapter: 36,
-      chapters: [0, 54, 34, 51, 49, 31, 27, 89, 26, 23, 36, 35, 16, 33, 45, 41, 50, 13, 32, 22, 29, 35, 41, 30, 25, 18, 65, 23, 31, 40, 16, 54, 42, 56, 29, 34, 13],
+      chapters: [
+        0,
+        54,
+        34,
+        51,
+        49,
+        31,
+        27,
+        89,
+        26,
+        23,
+        36,
+        35,
+        16,
+        33,
+        45,
+        41,
+        50,
+        13,
+        32,
+        22,
+        29,
+        35,
+        41,
+        30,
+        25,
+        18,
+        65,
+        23,
+        31,
+        40,
+        16,
+        54,
+        42,
+        56,
+        29,
+        34,
+        13,
+      ],
     },
     {
       bookNumber: 5,
@@ -51,7 +212,43 @@ export class BibleReference {
       abbreviation: 'Deut',
       longName: 'Book of Deuteronomy',
       lastChapter: 34,
-      chapters: [0, 46, 37, 29, 49, 33, 25, 26, 20, 29, 22, 32, 32, 18, 29, 23, 22, 20, 22, 21, 20, 23, 30, 25, 22, 19, 19, 26, 68, 29, 20, 30, 52, 29, 12],
+      chapters: [
+        0,
+        46,
+        37,
+        29,
+        49,
+        33,
+        25,
+        26,
+        20,
+        29,
+        22,
+        32,
+        32,
+        18,
+        29,
+        23,
+        22,
+        20,
+        22,
+        21,
+        20,
+        23,
+        30,
+        25,
+        22,
+        19,
+        19,
+        26,
+        68,
+        29,
+        20,
+        30,
+        52,
+        29,
+        12,
+      ],
     },
     {
       bookNumber: 6,
@@ -59,7 +256,33 @@ export class BibleReference {
       abbreviation: 'Josh',
       longName: 'Book of Joshua',
       lastChapter: 24,
-      chapters: [0, 18, 24, 17, 24, 15, 27, 26, 35, 27, 43, 23, 24, 33, 15, 63, 10, 18, 28, 51, 9, 45, 34, 16, 33],
+      chapters: [
+        0,
+        18,
+        24,
+        17,
+        24,
+        15,
+        27,
+        26,
+        35,
+        27,
+        43,
+        23,
+        24,
+        33,
+        15,
+        63,
+        10,
+        18,
+        28,
+        51,
+        9,
+        45,
+        34,
+        16,
+        33,
+      ],
     },
     {
       bookNumber: 7,
@@ -67,7 +290,30 @@ export class BibleReference {
       abbreviation: 'Jud',
       longName: 'Book of Judges',
       lastChapter: 21,
-      chapters: [0, 36, 23, 31, 24, 31, 40, 25, 35, 57, 18, 40, 15, 25, 20, 20, 31, 13, 31, 30, 48, 25],
+      chapters: [
+        0,
+        36,
+        23,
+        31,
+        24,
+        31,
+        40,
+        25,
+        35,
+        57,
+        18,
+        40,
+        15,
+        25,
+        20,
+        20,
+        31,
+        13,
+        31,
+        30,
+        48,
+        25,
+      ],
     },
     {
       bookNumber: 8,
@@ -83,7 +329,40 @@ export class BibleReference {
       abbreviation: '1 Sam',
       longName: 'First Book of Samuel',
       lastChapter: 31,
-      chapters: [0, 28, 36, 21, 22, 12, 21, 17, 22, 27, 27, 15, 25, 23, 52, 35, 23, 58, 30, 24, 42, 15, 23, 29, 22, 44, 25, 12, 25, 11, 31, 13],
+      chapters: [
+        0,
+        28,
+        36,
+        21,
+        22,
+        12,
+        21,
+        17,
+        22,
+        27,
+        27,
+        15,
+        25,
+        23,
+        52,
+        35,
+        23,
+        58,
+        30,
+        24,
+        42,
+        15,
+        23,
+        29,
+        22,
+        44,
+        25,
+        12,
+        25,
+        11,
+        31,
+        13,
+      ],
     },
     {
       bookNumber: 10,
@@ -91,7 +370,33 @@ export class BibleReference {
       abbreviation: '2 Sam',
       longName: 'Second Book of Samuel',
       lastChapter: 24,
-      chapters: [0, 27, 32, 39, 12, 25, 23, 29, 18, 13, 19, 27, 31, 39, 33, 37, 23, 29, 33, 43, 26, 22, 51, 39, 25],
+      chapters: [
+        0,
+        27,
+        32,
+        39,
+        12,
+        25,
+        23,
+        29,
+        18,
+        13,
+        19,
+        27,
+        31,
+        39,
+        33,
+        37,
+        23,
+        29,
+        33,
+        43,
+        26,
+        22,
+        51,
+        39,
+        25,
+      ],
     },
     {
       bookNumber: 11,
@@ -99,7 +404,31 @@ export class BibleReference {
       abbreviation: '1 Kng',
       longName: 'First Book of Kings',
       lastChapter: 22,
-      chapters: [0, 53, 46, 28, 34, 18, 38, 51, 66, 28, 29, 43, 33, 34, 31, 34, 34, 24, 46, 21, 43, 29, 53],
+      chapters: [
+        0,
+        53,
+        46,
+        28,
+        34,
+        18,
+        38,
+        51,
+        66,
+        28,
+        29,
+        43,
+        33,
+        34,
+        31,
+        34,
+        34,
+        24,
+        46,
+        21,
+        43,
+        29,
+        53,
+      ],
     },
     {
       bookNumber: 12,
@@ -107,7 +436,34 @@ export class BibleReference {
       abbreviation: '2 Kng',
       longName: 'Second Book of Kings',
       lastChapter: 25,
-      chapters: [0, 18, 25, 27, 44, 27, 33, 20, 29, 37, 36, 21, 21, 25, 29, 38, 20, 41, 37, 37, 21, 26, 20, 37, 20, 30],
+      chapters: [
+        0,
+        18,
+        25,
+        27,
+        44,
+        27,
+        33,
+        20,
+        29,
+        37,
+        36,
+        21,
+        21,
+        25,
+        29,
+        38,
+        20,
+        41,
+        37,
+        37,
+        21,
+        26,
+        20,
+        37,
+        20,
+        30,
+      ],
     },
     {
       bookNumber: 13,
@@ -115,7 +471,38 @@ export class BibleReference {
       abbreviation: '1 Chr',
       longName: 'First Book of Chronicles',
       lastChapter: 29,
-      chapters: [0, 54, 55, 24, 43, 26, 81, 40, 40, 44, 14, 47, 40, 14, 17, 29, 43, 27, 17, 19, 8, 30, 19, 32, 31, 31, 32, 34, 21, 30],
+      chapters: [
+        0,
+        54,
+        55,
+        24,
+        43,
+        26,
+        81,
+        40,
+        40,
+        44,
+        14,
+        47,
+        40,
+        14,
+        17,
+        29,
+        43,
+        27,
+        17,
+        19,
+        8,
+        30,
+        19,
+        32,
+        31,
+        31,
+        32,
+        34,
+        21,
+        30,
+      ],
     },
     {
       bookNumber: 14,
@@ -123,7 +510,45 @@ export class BibleReference {
       abbreviation: '2 Chr',
       longName: 'Second Book of Chronicles',
       lastChapter: 36,
-      chapters: [0, 17, 18, 17, 22, 14, 42, 22, 18, 31, 19, 23, 16, 22, 15, 19, 14, 19, 34, 11, 37, 20, 12, 21, 27, 28, 23, 9, 27, 36, 27, 21, 33, 25, 33, 27, 23],
+      chapters: [
+        0,
+        17,
+        18,
+        17,
+        22,
+        14,
+        42,
+        22,
+        18,
+        31,
+        19,
+        23,
+        16,
+        22,
+        15,
+        19,
+        14,
+        19,
+        34,
+        11,
+        37,
+        20,
+        12,
+        21,
+        27,
+        28,
+        23,
+        9,
+        27,
+        36,
+        27,
+        21,
+        33,
+        25,
+        33,
+        27,
+        23,
+      ],
     },
     {
       bookNumber: 15,
@@ -155,7 +580,51 @@ export class BibleReference {
       abbreviation: 'Job',
       longName: 'Book of Job',
       lastChapter: 42,
-      chapters: [0, 22, 13, 26, 21, 27, 30, 21, 22, 35, 22, 20, 25, 28, 22, 35, 22, 16, 21, 29, 29, 34, 30, 17, 25, 6, 14, 23, 28, 25, 31, 40, 22, 33, 37, 16, 33, 24, 41, 30, 24, 34, 17],
+      chapters: [
+        0,
+        22,
+        13,
+        26,
+        21,
+        27,
+        30,
+        21,
+        22,
+        35,
+        22,
+        20,
+        25,
+        28,
+        22,
+        35,
+        22,
+        16,
+        21,
+        29,
+        29,
+        34,
+        30,
+        17,
+        25,
+        6,
+        14,
+        23,
+        28,
+        25,
+        31,
+        40,
+        22,
+        33,
+        37,
+        16,
+        33,
+        24,
+        41,
+        30,
+        24,
+        34,
+        17,
+      ],
     },
     {
       bookNumber: 19,
@@ -163,7 +632,159 @@ export class BibleReference {
       abbreviation: 'Psalm',
       longName: 'Book of Psalms',
       lastChapter: 150,
-      chapters: [0, 6, 12, 8, 8, 12, 10, 17, 9, 20, 18, 7, 8, 6, 7, 5, 11, 15, 50, 14, 9, 13, 31, 6, 10, 22, 12, 14, 9, 11, 12, 24, 11, 22, 22, 28, 12, 40, 22, 13, 17, 13, 11, 5, 26, 17, 11, 9, 14, 20, 23, 19, 9, 6, 7, 23, 13, 11, 11, 17, 12, 8, 12, 11, 10, 13, 20, 7, 35, 36, 5, 24, 20, 28, 23, 10, 12, 20, 72, 13, 19, 16, 8, 18, 12, 13, 17, 7, 18, 52, 17, 16, 15, 5, 23, 11, 13, 12, 9, 9, 5, 8, 28, 22, 35, 45, 48, 43, 13, 31, 7, 10, 10, 9, 8, 18, 19, 2, 29, 176, 7, 8, 9, 4, 8, 5, 6, 5, 6, 8, 8, 3, 18, 3, 3, 21, 26, 9, 8, 24, 13, 10, 7, 12, 15, 21, 10, 20, 14, 9, 6],
+      chapters: [
+        0,
+        6,
+        12,
+        8,
+        8,
+        12,
+        10,
+        17,
+        9,
+        20,
+        18,
+        7,
+        8,
+        6,
+        7,
+        5,
+        11,
+        15,
+        50,
+        14,
+        9,
+        13,
+        31,
+        6,
+        10,
+        22,
+        12,
+        14,
+        9,
+        11,
+        12,
+        24,
+        11,
+        22,
+        22,
+        28,
+        12,
+        40,
+        22,
+        13,
+        17,
+        13,
+        11,
+        5,
+        26,
+        17,
+        11,
+        9,
+        14,
+        20,
+        23,
+        19,
+        9,
+        6,
+        7,
+        23,
+        13,
+        11,
+        11,
+        17,
+        12,
+        8,
+        12,
+        11,
+        10,
+        13,
+        20,
+        7,
+        35,
+        36,
+        5,
+        24,
+        20,
+        28,
+        23,
+        10,
+        12,
+        20,
+        72,
+        13,
+        19,
+        16,
+        8,
+        18,
+        12,
+        13,
+        17,
+        7,
+        18,
+        52,
+        17,
+        16,
+        15,
+        5,
+        23,
+        11,
+        13,
+        12,
+        9,
+        9,
+        5,
+        8,
+        28,
+        22,
+        35,
+        45,
+        48,
+        43,
+        13,
+        31,
+        7,
+        10,
+        10,
+        9,
+        8,
+        18,
+        19,
+        2,
+        29,
+        176,
+        7,
+        8,
+        9,
+        4,
+        8,
+        5,
+        6,
+        5,
+        6,
+        8,
+        8,
+        3,
+        18,
+        3,
+        3,
+        21,
+        26,
+        9,
+        8,
+        24,
+        13,
+        10,
+        7,
+        12,
+        15,
+        21,
+        10,
+        20,
+        14,
+        9,
+        6,
+      ],
     },
     {
       bookNumber: 20,
@@ -171,7 +792,40 @@ export class BibleReference {
       abbreviation: 'Prov',
       longName: 'Book of Proverbs',
       lastChapter: 31,
-      chapters: [0, 33, 22, 35, 27, 23, 35, 27, 36, 18, 32, 31, 28, 25, 35, 33, 33, 28, 24, 29, 30, 31, 29, 35, 34, 28, 28, 27, 28, 27, 33, 31],
+      chapters: [
+        0,
+        33,
+        22,
+        35,
+        27,
+        23,
+        35,
+        27,
+        36,
+        18,
+        32,
+        31,
+        28,
+        25,
+        35,
+        33,
+        33,
+        28,
+        24,
+        29,
+        30,
+        31,
+        29,
+        35,
+        34,
+        28,
+        28,
+        27,
+        28,
+        27,
+        33,
+        31,
+      ],
     },
     {
       bookNumber: 21,
@@ -195,7 +849,75 @@ export class BibleReference {
       abbreviation: 'Isa',
       longName: 'Book of Isaiah',
       lastChapter: 66,
-      chapters: [0, 31, 22, 26, 6, 30, 13, 25, 22, 21, 34, 16, 6, 22, 32, 9, 14, 14, 7, 25, 6, 17, 25, 18, 23, 12, 21, 13, 29, 24, 33, 9, 20, 24, 17, 10, 22, 38, 22, 8, 31, 29, 25, 28, 28, 25, 13, 15, 22, 26, 11, 23, 15, 12, 17, 13, 12, 21, 14, 21, 22, 11, 12, 19, 12, 25, 24],
+      chapters: [
+        0,
+        31,
+        22,
+        26,
+        6,
+        30,
+        13,
+        25,
+        22,
+        21,
+        34,
+        16,
+        6,
+        22,
+        32,
+        9,
+        14,
+        14,
+        7,
+        25,
+        6,
+        17,
+        25,
+        18,
+        23,
+        12,
+        21,
+        13,
+        29,
+        24,
+        33,
+        9,
+        20,
+        24,
+        17,
+        10,
+        22,
+        38,
+        22,
+        8,
+        31,
+        29,
+        25,
+        28,
+        28,
+        25,
+        13,
+        15,
+        22,
+        26,
+        11,
+        23,
+        15,
+        12,
+        17,
+        13,
+        12,
+        21,
+        14,
+        21,
+        22,
+        11,
+        12,
+        19,
+        12,
+        25,
+        24,
+      ],
     },
     {
       bookNumber: 24,
@@ -203,7 +925,61 @@ export class BibleReference {
       abbreviation: 'Jer',
       longName: 'Book of Jeremiah',
       lastChapter: 52,
-      chapters: [0, 19, 37, 25, 31, 31, 30, 34, 22, 26, 25, 23, 17, 27, 22, 21, 21, 27, 23, 15, 18, 14, 30, 40, 10, 38, 24, 22, 17, 32, 24, 40, 44, 26, 22, 19, 32, 21, 28, 18, 16, 18, 22, 13, 30, 5, 28, 7, 47, 39, 46, 64, 34],
+      chapters: [
+        0,
+        19,
+        37,
+        25,
+        31,
+        31,
+        30,
+        34,
+        22,
+        26,
+        25,
+        23,
+        17,
+        27,
+        22,
+        21,
+        21,
+        27,
+        23,
+        15,
+        18,
+        14,
+        30,
+        40,
+        10,
+        38,
+        24,
+        22,
+        17,
+        32,
+        24,
+        40,
+        44,
+        26,
+        22,
+        19,
+        32,
+        21,
+        28,
+        18,
+        16,
+        18,
+        22,
+        13,
+        30,
+        5,
+        28,
+        7,
+        47,
+        39,
+        46,
+        64,
+        34,
+      ],
     },
     {
       bookNumber: 25,
@@ -219,7 +995,57 @@ export class BibleReference {
       abbreviation: 'Eze',
       longName: 'Book of Ezekiel',
       lastChapter: 48,
-      chapters: [0, 28, 10, 27, 17, 17, 14, 27, 18, 11, 22, 25, 28, 23, 23, 8, 63, 24, 32, 14, 49, 32, 31, 49, 27, 17, 21, 36, 26, 21, 26, 18, 32, 33, 31, 15, 38, 28, 23, 29, 49, 26, 20, 27, 31, 25, 24, 23, 35],
+      chapters: [
+        0,
+        28,
+        10,
+        27,
+        17,
+        17,
+        14,
+        27,
+        18,
+        11,
+        22,
+        25,
+        28,
+        23,
+        23,
+        8,
+        63,
+        24,
+        32,
+        14,
+        49,
+        32,
+        31,
+        49,
+        27,
+        17,
+        21,
+        36,
+        26,
+        21,
+        26,
+        18,
+        32,
+        33,
+        31,
+        15,
+        38,
+        28,
+        23,
+        29,
+        49,
+        26,
+        20,
+        27,
+        31,
+        25,
+        24,
+        23,
+        35,
+      ],
     },
     {
       bookNumber: 27,
@@ -331,7 +1157,37 @@ export class BibleReference {
       abbreviation: 'Matt',
       longName: 'Gospel of Matthew',
       lastChapter: 28,
-      chapters: [0, 25, 23, 17, 25, 48, 34, 29, 34, 38, 42, 30, 50, 58, 36, 39, 28, 27, 35, 30, 34, 46, 46, 39, 51, 46, 75, 66, 20],
+      chapters: [
+        0,
+        25,
+        23,
+        17,
+        25,
+        48,
+        34,
+        29,
+        34,
+        38,
+        42,
+        30,
+        50,
+        58,
+        36,
+        39,
+        28,
+        27,
+        35,
+        30,
+        34,
+        46,
+        46,
+        39,
+        51,
+        46,
+        75,
+        66,
+        20,
+      ],
     },
     {
       bookNumber: 41,
@@ -339,7 +1195,25 @@ export class BibleReference {
       abbreviation: 'Mark',
       longName: 'Gospel of Mark',
       lastChapter: 16,
-      chapters: [0, 45, 28, 35, 41, 43, 56, 37, 38, 50, 52, 33, 44, 37, 72, 47, 20],
+      chapters: [
+        0,
+        45,
+        28,
+        35,
+        41,
+        43,
+        56,
+        37,
+        38,
+        50,
+        52,
+        33,
+        44,
+        37,
+        72,
+        47,
+        20,
+      ],
     },
     {
       bookNumber: 42,
@@ -347,7 +1221,33 @@ export class BibleReference {
       abbreviation: 'Luke',
       longName: 'Gospel of Luke',
       lastChapter: 24,
-      chapters: [0, 80, 52, 38, 44, 39, 49, 50, 56, 62, 42, 54, 59, 35, 35, 32, 31, 37, 43, 48, 47, 38, 71, 56, 53],
+      chapters: [
+        0,
+        80,
+        52,
+        38,
+        44,
+        39,
+        49,
+        50,
+        56,
+        62,
+        42,
+        54,
+        59,
+        35,
+        35,
+        32,
+        31,
+        37,
+        43,
+        48,
+        47,
+        38,
+        71,
+        56,
+        53,
+      ],
     },
     {
       bookNumber: 43,
@@ -355,7 +1255,30 @@ export class BibleReference {
       abbreviation: 'John',
       longName: 'Gospel of John',
       lastChapter: 21,
-      chapters: [0, 51, 25, 36, 54, 47, 71, 53, 59, 41, 42, 57, 50, 38, 31, 27, 33, 26, 40, 42, 31, 25],
+      chapters: [
+        0,
+        51,
+        25,
+        36,
+        54,
+        47,
+        71,
+        53,
+        59,
+        41,
+        42,
+        57,
+        50,
+        38,
+        31,
+        27,
+        33,
+        26,
+        40,
+        42,
+        31,
+        25,
+      ],
     },
     {
       bookNumber: 44,
@@ -363,7 +1286,37 @@ export class BibleReference {
       abbreviation: 'Acts',
       longName: 'Acts of the Apostles',
       lastChapter: 28,
-      chapters: [0, 26, 47, 26, 37, 42, 15, 60, 40, 43, 48, 30, 25, 52, 28, 41, 40, 34, 28, 41, 38, 40, 30, 35, 27, 27, 32, 44, 31],
+      chapters: [
+        0,
+        26,
+        47,
+        26,
+        37,
+        42,
+        15,
+        60,
+        40,
+        43,
+        48,
+        30,
+        25,
+        52,
+        28,
+        41,
+        40,
+        34,
+        28,
+        41,
+        38,
+        40,
+        30,
+        35,
+        27,
+        27,
+        32,
+        44,
+        31,
+      ],
     },
     {
       bookNumber: 45,
@@ -371,7 +1324,25 @@ export class BibleReference {
       abbreviation: 'Rom',
       longName: 'Epistle to the Romans',
       lastChapter: 16,
-      chapters: [0, 32, 29, 31, 25, 21, 23, 25, 39, 33, 21, 36, 21, 14, 23, 33, 27],
+      chapters: [
+        0,
+        32,
+        29,
+        31,
+        25,
+        21,
+        23,
+        25,
+        39,
+        33,
+        21,
+        36,
+        21,
+        14,
+        23,
+        33,
+        27,
+      ],
     },
     {
       bookNumber: 46,
@@ -379,7 +1350,25 @@ export class BibleReference {
       abbreviation: '1 Cor',
       longName: 'First Epistle to the Corinthians',
       lastChapter: 16,
-      chapters: [0, 31, 16, 23, 21, 13, 20, 40, 13, 27, 33, 34, 31, 13, 40, 58, 24],
+      chapters: [
+        0,
+        31,
+        16,
+        23,
+        21,
+        13,
+        20,
+        40,
+        13,
+        27,
+        33,
+        34,
+        31,
+        13,
+        40,
+        58,
+        24,
+      ],
     },
     {
       bookNumber: 47,
@@ -539,7 +1528,31 @@ export class BibleReference {
       abbreviation: 'Rev',
       longName: 'Book of Revelations',
       lastChapter: 22,
-      chapters: [0, 20, 29, 22, 11, 14, 17, 17, 13, 21, 11, 19, 17, 18, 20, 8, 21, 18, 24, 21, 15, 27, 21],
+      chapters: [
+        0,
+        20,
+        29,
+        22,
+        11,
+        14,
+        17,
+        17,
+        13,
+        21,
+        11,
+        19,
+        17,
+        18,
+        20,
+        8,
+        21,
+        18,
+        24,
+        21,
+        15,
+        27,
+        21,
+      ],
     },
   ];
 
@@ -565,14 +1578,19 @@ export class BibleReference {
     if (this.section.end.chapter === 0) {
       this.section.end.chapter = this.section.start.chapter;
     }
-    if (Number(this.section.start.verse) > Number(this.section.end.verse) && this.section.start.chapter === this.section.end.chapter) {
+    if (
+      Number(this.section.start.verse) > Number(this.section.end.verse) &&
+      this.section.start.chapter === this.section.end.chapter
+    ) {
       this.section.end.verse = this.section.start.verse;
     }
     if (this.section.start.verse === 0) {
       this.section.start.verse = 1;
     }
     if (this.section.end.verse === 0) {
-      this.section.end.verse = this.section.book.chapters[this.section.end.chapter];
+      this.section.end.verse = this.section.book.chapters[
+        this.section.end.chapter
+      ];
     }
   }
 
@@ -606,19 +1624,31 @@ export class BibleReference {
     if (fbook.search(/\b(1|i|1st|first)\s*(samuel|sa|sam|sml)\b/i) !== -1) {
       return this.bookName(9);
     }
-    if (fbook.search(/\b(2|ii|2nd|second|sec)\s*(samuel|sa|sam|sml)\b/i) !== -1) {
+    if (
+      fbook.search(/\b(2|ii|2nd|second|sec)\s*(samuel|sa|sam|sml)\b/i) !== -1
+    ) {
       return this.bookName(10);
     }
-    if (fbook.search(/\b(1|i|1st|first)\s*(kings|king|kgs|kn|k|ki)\b/i) !== -1) {
+    if (
+      fbook.search(/\b(1|i|1st|first)\s*(kings|king|kgs|kn|k|ki)\b/i) !== -1
+    ) {
       return this.bookName(11);
     }
-    if (fbook.search(/\b(2|ii|2nd|second|sec)\s*(kings|king|kgs|kn|k|ki)\b/i) !== -1) {
+    if (
+      fbook.search(/\b(2|ii|2nd|second|sec)\s*(kings|king|kgs|kn|k|ki)\b/i) !==
+      -1
+    ) {
       return this.bookName(12);
     }
-    if (fbook.search(/\b(1|i|1st|first)\s*(chronicles|chron|ch|chr)\b/i) !== -1) {
+    if (
+      fbook.search(/\b(1|i|1st|first)\s*(chronicles|chron|ch|chr)\b/i) !== -1
+    ) {
       return this.bookName(13);
     }
-    if (fbook.search(/\b(2|ii|2nd|second|sec)\s*(chronicles|chron|ch|chr)\b/i) !== -1) {
+    if (
+      fbook.search(/\b(2|ii|2nd|second|sec)\s*(chronicles|chron|ch|chr)\b/i) !==
+      -1
+    ) {
       return this.bookName(14);
     }
     if (fbook.search(/\b(ezra|ezr)\b/i) !== -1) {
@@ -639,10 +1669,17 @@ export class BibleReference {
     if (fbook.search(/\b(proverbs|prov|pr|pro|proverb|prv|prvbs)\b/i) !== -1) {
       return this.bookName(20);
     }
-    if (fbook.search(/\b(ecclesiastes|eccl|ecc|eccles|ec|ecl|ecclesiaste)\b/i) !== -1) {
+    if (
+      fbook.search(/\b(ecclesiastes|eccl|ecc|eccles|ec|ecl|ecclesiaste)\b/i) !==
+      -1
+    ) {
       return this.bookName(21);
     }
-    if (fbook.search(/\b(song\sof\ssolomon|song\sof\ssongs|sos|ss|son|so|song|songs)\b/i) !== -1) {
+    if (
+      fbook.search(
+        /\b(song\sof\ssolomon|song\sof\ssongs|sos|ss|son|so|song|songs)\b/i
+      ) !== -1
+    ) {
       return this.bookName(22);
     }
     if (fbook.search(/\b(isaiah|is|isah|isai|ia)\b/i) !== -1) {
@@ -725,13 +1762,25 @@ export class BibleReference {
     if (fbook.search(/\b(romans|rom|ro|rm|roman)\b/i) !== -1) {
       return this.bookName(45);
     }
-    if (fbook.search(/\b(1|i|1st|first)\s*(corinthian|cor|corinthians|corinth|corin|corth|corint)\b/i) !== -1) {
+    if (
+      fbook.search(
+        /\b(1|i|1st|first)\s*(corinthian|cor|corinthians|corinth|corin|corth|corint)\b/i
+      ) !== -1
+    ) {
       return this.bookName(46);
     }
-    if (fbook.search(/\b(2|ii|2nd|second|sec)\s*(corinthian|cor|corinthians|corinth|corin|corth|corint)\b/i) !== -1) {
+    if (
+      fbook.search(
+        /\b(2|ii|2nd|second|sec)\s*(corinthian|cor|corinthians|corinth|corin|corth|corint)\b/i
+      ) !== -1
+    ) {
       return this.bookName(47);
     }
-    if (fbook.search(/\b(galatians|galatian|galations|gal|ga|gala|galation|galat)\b/i) !== -1) {
+    if (
+      fbook.search(
+        /\b(galatians|galatian|galations|gal|ga|gala|galation|galat)\b/i
+      ) !== -1
+    ) {
       return this.bookName(48);
     }
     if (fbook.search(/\b(ephesians|eph|ep|ephes|ephe|ephs)\b/i) !== -1) {
@@ -740,19 +1789,34 @@ export class BibleReference {
     if (fbook.search(/\b(philippians|phi|phil|ph|philip)\b/i) !== -1) {
       return this.bookName(50);
     }
-    if (fbook.search(/\b(colossians|col|co|colossian|colos|coloss)\b/i) !== -1) {
+    if (
+      fbook.search(/\b(colossians|col|co|colossian|colos|coloss)\b/i) !== -1
+    ) {
       return this.bookName(51);
     }
-    if (fbook.search(/\b(1|i|1st|first)\s*(thessalonians|the|thessa|thessalonian|thes|thess|th)\b/i) !== -1) {
+    if (
+      fbook.search(
+        /\b(1|i|1st|first)\s*(thessalonians|the|thessa|thessalonian|thes|thess|th)\b/i
+      ) !== -1
+    ) {
       return this.bookName(52);
     }
-    if (fbook.search(/\b(2|ii|2nd|second|sec)\s*(thessalonians|the|thessa|thessalonian|thes|thess|th)\b/i) !== -1) {
+    if (
+      fbook.search(
+        /\b(2|ii|2nd|second|sec)\s*(thessalonians|the|thessa|thessalonian|thes|thess|th)\b/i
+      ) !== -1
+    ) {
       return this.bookName(53);
     }
-    if (fbook.search(/\b(1|i|1st|first)\s*(timothy|tim|ti|timoth|tm)\b/i) !== -1) {
+    if (
+      fbook.search(/\b(1|i|1st|first)\s*(timothy|tim|ti|timoth|tm)\b/i) !== -1
+    ) {
       return this.bookName(54);
     }
-    if (fbook.search(/\b(2|ii|2nd|second|sec)\s*(timothy|tim|timoth|tm)\b/i) !== -1) {
+    if (
+      fbook.search(/\b(2|ii|2nd|second|sec)\s*(timothy|tim|timoth|tm)\b/i) !==
+      -1
+    ) {
       return this.bookName(55);
     }
     if (fbook.search(/\b(titus|tit)\b/i) !== -1) {
@@ -767,10 +1831,15 @@ export class BibleReference {
     if (fbook.search(/\b(james|jam|ja|jas|jms|jame|jm)\b/i) !== -1) {
       return this.bookName(59);
     }
-    if (fbook.search(/\b(1|i|1st|first)\s*(peter|pe|pet|pete|pt|p)\b/i) !== -1) {
+    if (
+      fbook.search(/\b(1|i|1st|first)\s*(peter|pe|pet|pete|pt|p)\b/i) !== -1
+    ) {
       return this.bookName(60);
     }
-    if (fbook.search(/\b(2|ii|2nd|second|sec)\s*(peter|pe|pet|pete|pt|p)\b/i) !== -1) {
+    if (
+      fbook.search(/\b(2|ii|2nd|second|sec)\s*(peter|pe|pet|pete|pt|p)\b/i) !==
+      -1
+    ) {
       return this.bookName(61);
     }
     if (fbook.search(/\b(jude|ju)\b/i) !== -1) {
@@ -785,13 +1854,23 @@ export class BibleReference {
 
   static toString(section: Section) {
     // get the starting book, chapter, verse
-    let ref = section.book.name.concat(' ').concat(section.start.chapter.toString()).concat(':').concat(section.start.verse.toString());
+    let ref = section.book.name
+      .concat(' ')
+      .concat(section.start.chapter.toString())
+      .concat(':')
+      .concat(section.start.verse.toString());
 
-    if (section.start.chapter === section.end.chapter && section.start.verse === section.end.verse) {
+    if (
+      section.start.chapter === section.end.chapter &&
+      section.start.verse === section.end.verse
+    ) {
       return ref;
     }
 
-    if (section.start.chapter === section.end.chapter && section.start.verse !== section.end.verse) {
+    if (
+      section.start.chapter === section.end.chapter &&
+      section.start.verse !== section.end.verse
+    ) {
       return ref.concat(' - ').concat(section.end.verse.toString());
     }
 
@@ -806,7 +1885,11 @@ export class BibleReference {
     return this.Books[booknum];
   }
 
-  static formatReferenceKey(book: number | string, chapter: number | string, vs: number | string) {
+  static formatReferenceKey(
+    book: number | string,
+    chapter: number | string,
+    vs: number | string
+  ) {
     return `${book}:${chapter}:${vs}`;
   }
 
@@ -822,23 +1905,64 @@ export class BibleReference {
       return Overlap.None;
     }
 
-    if (leftRef.section.end.chapter === rightRef.section.start.chapter) {
-      if (leftRef.section.end.verse > rightRef.section.start.verse || rightRef.section.end.verse > leftRef.section.start.verse) {
+    if (leftRef.section.start.chapter === rightRef.section.end.chapter) {
+      if (leftRef.section.start.verse >= rightRef.section.start.verse) {
+        if (leftRef.section.end.verse <= rightRef.section.end.verse) {
+          return Overlap.Subset;
+        }
+        return Overlap.Intersect;
+      } else if (rightRef.section.start.verse > leftRef.section.start.verse) {
+        if (rightRef.section.end.verse < leftRef.section.end.verse) {
+          return Overlap.Subset;
+        }
         return Overlap.Intersect;
       }
     }
     return Overlap.None;
   }
 
-  static mergeReference(ref1: BibleReference, ref2: BibleReference) {
-    // eliminate based on book first.
-    if (ref1.section.book !== ref2.section.book) {
-      // either of the above mean we are not overlapping
-      return null;
+  static mergeReference(
+    ref1: BibleReference,
+    ref2: BibleReference,
+    strategy: Overlap
+  ): BibleReference | null {
+    if (ref1.toString() === ref2.toString()) {
+      return ref1;
     }
-    // detect overlaps from end
-    // detect embedded
-    return null;
+    let overlapType = BibleReference.overlap(ref1, ref2);
+    switch (overlapType) {
+      case Overlap.Subset:
+        if (strategy !== Overlap.Subset && strategy !== Overlap.Intersect) {
+          return null;
+        }
+        break;
+      case Overlap.Intersect:
+        if (strategy !== Overlap.Intersect) {
+          return null;
+        }
+        break;
+      case Overlap.None:
+        return null;
+    }
+    // Now it's safe to merge
+    let mergedRef = new BibleReference(ref1.toString());
+    mergedRef.section.start.chapter =
+      ref1.section.start.chapter <= ref2.section.start.chapter
+        ? ref1.section.start.chapter
+        : ref2.section.start.chapter;
+    mergedRef.section.start.verse =
+      ref1.section.start.verse <= ref2.section.start.verse
+        ? ref1.section.start.verse
+        : ref2.section.start.verse;
+    mergedRef.section.end.chapter =
+      ref1.section.end.chapter >= ref2.section.end.chapter
+        ? ref1.section.end.chapter
+        : ref2.section.end.chapter;
+    mergedRef.section.end.verse =
+      ref1.section.end.verse >= ref2.section.end.verse
+        ? ref1.section.end.verse
+        : ref2.section.end.verse;
+    return mergedRef;
   }
 
   //#endregion
@@ -975,7 +2099,11 @@ export class BibleReference {
     });
   }
 
-  private maybeParseChapterOrVerse(foundSecondBook: boolean, foundFirstVerse: boolean, isEnd: boolean) {
+  private maybeParseChapterOrVerse(
+    foundSecondBook: boolean,
+    foundFirstVerse: boolean,
+    isEnd: boolean
+  ) {
     const self = this;
     return this.maybeDo(() => {
       if (self.ref.search(/:/) !== -1 || foundSecondBook || !foundFirstVerse) {