Exodus 18:13, 16, 19, 26

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

When they have a dispute, it comes to me, and I judge between a man and his neighbor and make known the statutes of God and His laws.”

Now listen to me: I will give you counsel, and God be with you. You be the people’s representative before God, and you bring the disputes to God

They judged the people at all times; the difficult dispute they would bring to Moses, but every minor dispute they themselves would judge.