Old Testament readings use the Septuagint , the Scripture the apostles quoted. Masoretic numbering shown for reference.Learn why
LXX

Isaiah 49:7

Thus saith the Lord that delivered thee, the God of Israel, Sanctify him that despises his life, him that is abhorred by the nations that are the servants of princes: kings shall behold him, and princes shall arise, and shall worship him, for the Lord's sake: for the Holy One of Israel is faithful, and I have chosen thee.

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