Exodus 18:21

18:21 But you choose from the people capable men, God-fearing, men of truth, those who hate bribes, and put them over the people as rulers of thousands, rulers of hundreds, rulers of fifties, and rulers of tens.

Exodus 18:25-26

18:25 Moses chose capable men from all Israel, and he made them heads over the people, rulers of thousands, rulers of hundreds, rulers of fifties, and rulers of tens. 18:26 They judged the people under normal circumstances; the difficult cases they would bring to Moses, but every small case they would judge themselves.