Old Testament readings use the Septuagint , the Scripture the apostles quoted. Masoretic numbering shown for reference.Learn why
LXX2012

Numbers 18:15

And every thing that opens the womb of all flesh, whatever they bring to the Lord, whether man or beast, shall be yours: only the firstborn of men shall be surely redeemed, and you shall redeem the firstborn of unclean cattle.

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