Exodus 18:25

25 aMoses chose able men out of all Israel and made them heads over the people, chiefs of thousands, of hundreds, of fifties, and of tens.

Numbers 11:16

Elders Appointed to Aid Moses

16Then the Lord said to Moses, “Gather for me bseventy men of the elders of Israel, whom you know to be the elders of the people and cofficers over them, and bring them to the tent of meeting, and let them take their stand there with you.

Deuteronomy 1:15

15So I took the heads of your tribes, wise and experienced men, dand set them as heads over you, commanders of thousands, commanders of hundreds, commanders of fifties, commanders of tens, and officers, throughout your tribes.
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