Exodus 18:21-22

21Furthermore, you shall select from all the people competent men who [reverently] fear God, men of truth, those who hate dishonest gain; you shall place these over the people as leaders of thousands, of hundreds, of fifties and of tens.

22They shall judge the people at all times; have them bring every major dispute to you, but let them judge every minor dispute themselves. So it will be easier for you, and they will bear the burden with you.