Exodus 18:10-14

So Jethro said, “Blessed be the Lord who rescued you from the hand of the Egyptians and from the hand of Pharaoh, and who rescued the people from under the hand of the Egyptians.

Now I know that the Lord is greater than all the gods; indeed, it was proven when they acted insolently against the people.”

Then Jethro, Moses’ father-in-law, took a burnt offering and sacrifices for God, and Aaron came with all the elders of Israel to eat a meal with Moses’ father-in-law before God. Jethro Counsels Moses

And it came about the next day, that Moses sat to judge the people, and the people stood before Moses from the morning until the evening.

Now when Moses’ father-in-law saw all that he was doing for the people, he said, “What is this thing that you are doing for the people? Why do you alone sit as judge and all the people stand before you from morning until evening?”