Exodus 18:13, 16, 19, 26

And it came to pass on the morrow, that Moses sat to judge the people: and the people stood by Moses from the morning unto the evening.

when they have a matter, they come unto me; and I judge between one and another, and I do make them know the statutes of God, and his laws.

Hearken now unto my voice, I will give thee counsel, and God shall be with thee: Be thou for the people to God-ward, that thou mayest bring the causes unto God

And they judged the people at all seasons: the hard causes they brought unto Moses, but every small matter they judged themselves.