Exodus 17:10
10 So gJoshua did as Moses told him, and fought with Amalek, while Moses, Aaron, and iHur went up to the top of the hill.
Exodus 17:12
12 But Moses’ hands grew weary, so they took a stone and put it under him, and he sat on it, while Aaron and iHur held up his hands, one on one side, and the other on the other side. So his hands were steady until the going down of the sun.
Exodus 24:14
14 And he said to the elders, “Wait here for us until we return to you. And behold, Aaron and mHur are with you. Whoever has a dispute, let him go to them.”