Old Testament readings use the Septuagint , the Scripture the apostles quoted. Masoretic numbering shown for reference.Learn why
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Isaiah 27:9

Therefore by this the iniquity of Jacob will be forgiven, and this is all the fruit of taking away his sin: that he makes all the stones of the altar as chalk stones that are beaten in pieces, so that the Asherah poles and the incense altars shall rise no more.

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