Any time Moses held his hands in the air, the men of Israel would start winning the fight. But when Moses put his hands down, the men of Israel began to lose the fight.
After some time, Moses’ arms became tired. So they put a large rock under Moses for him to sit on. Then Aaron and Hur held Moses’ hands in the air. Aaron was on one side of Moses and Hur was on the other side. They held his hands up like this until the sun went down.