Exodus 18:22-25

22They should judge the people at all times. Then they can bring you every major case but judge every minor case themselves. In this way you will lighten your load, and they will bear it with you.

23If you do this, and God so directs you, you will be able to endure, and also all these people will be able to go home satisfied.”

24Moses listened to his father-in-law and did everything he said.

25So Moses chose able men from all Israel and made them leaders over the people as commanders of thousands, hundreds, fifties, and tens.