Exodus 18:12-16

12And Jethro, Moses’ father in law, took a burnt offering and sacrifices for God: and Aaron came, and all the elders of Israel, to eat bread with Moses’ father in law before God.

13And it came to pass on the morrow, that Moses sat to judge the people: and the people stood about Moses from the morning unto the evening.

14And when Moses’ father in law saw all that he did to the people, he said, What is this thing that thou doest to the people? why sittest thou thyself alone, and all the people stand about thee from morning unto even?

15And Moses said unto his father in law, Because the people come unto me to inquire of God:

16when they have a matter, they come unto me; and I judge between a man and his neighbour, and I make them know the statutes of God, and his laws.