CLV(i)
9 And Moses said to Joshua: Choose men for us and go forth. Fight with Amalek. Tomorrow I will be stationed on the summit of the hill with the rod of Elohim in my hand.
10 Joshua did just as Moses said to him, to fight with Amalek. As for Moses, Aaron and Hur, they ascended the summit of the hill.
11 Now it came to be just as Moses was raising high his hands that Israel had the mastery, and just as he was giving his hands rest then Amalek had the mastery.
12 When the hands of Moses became heavy, they took a stone and placed it beneath him, and he sat on it. As for Aaron and Hur, they upheld his hands, from this side one and and from that side one. So it came to be that his hands were constant until sunset. "
13 Thus Joshua defeated Amalek and his people with the edge of the sword.