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

Malachi 3:7

but ye, the sons of Jacob, have not refrained from the iniquities of your fathers: ye have perverted my statutes, and have not kept them. Return to me, and I will return to you, saith the Lord Almighty. But ye said, Wherein shall we return?

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