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

1 Chronicles 24:31

And they also received lots as their brethren the sons of Aaron before the king; Sadoc also, and Achimelech, and the chiefs of the families of the priests and of the Levites, principal heads of families, even as their younger brethren.

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