Old Testament readings use the Septuagint , the Scripture the apostles quoted. Masoretic numbering shown for reference.Learn why
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Isaiah 49:6

Indeed, he says, “It is too light a thing that you should be my servant to raise up the tribes of Jacob, and to restore the preserved of Israel. I will also give you as a light to the nations, that you may be my salvation to the end of the earth.”

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