Exodus 18:7, 12-16

So Moses went out to meet his father-in-law, bowed down, and kissed him. And they asked each other about their well-being, and they went into the tent.

Then Jethro, Moses’ father-in-law, took a burnt offering and other sacrifices to offer to God. And Aaron came with all the elders of Israel to eat bread with Moses’ father-in-law before God. And so it was, on the next day, that Moses sat to judge the people; and the people stood before Moses from morning until evening. So when Moses’ father-in-law saw all that he did for the people, he said, “What is this thing that you are doing for the people? Why do you alone sit, and all the people stand before you from morning until evening?” And Moses said to his father-in-law, “Because the people come to me to inquire of God. When they have a difficulty, they come to me, and I judge between one and another; and I make known the statutes of God and His laws.”