Old Testament readings use the Septuagint , the Scripture the apostles quoted. Masoretic numbering shown for reference.Learn why
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Isaiah 49:21

Then you will say in your heart, ‘Who has conceived these for me, since I have been bereaved of my children and am alone, an exile, and wandering back and forth? Who has brought these up? Behold, I was left alone. Where were these?’”

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