Exodus 18:15, 19, 26

Moses replied, “Because the people come to me to get a ruling from God.

Now listen to me, and let me give you a word of advice, and may God be with you. You should continue to be the people’s representative before God, bringing their disputes to him.

These men were always available to solve the people’s common disputes. They brought the major cases to Moses, but they took care of the smaller matters themselves.