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

Exodus 18:21

And do you look out for yourself out of all the people able men, fearing God, righteous men, hating pride, and you shall set over the people captains of thousands and captains of hundreds, and captains of fifties, and captains of tens.

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