Exodus 17:9-13 ▼

9 And Moses said to Joshua, “Choose for us men and go out—fight with Amalek. Tomorrow I will stand on the top of the hill, and the staff of God will be in my hand.”

10 And Joshua did as Moses said to him, to fight with Amalek. And Moses, Aaron, and Hur went up to the top of the hill.

11 And it came to pass when Moses held up his hand, that Israel prevailed, and when he let his hand down, that Amalek prevailed.

12 And the hands of Moses became heavy, and they took a stone and put it under him, and he sat on it. And Aaron and Hur supported his hands—one from this, and one from that—and his hands were steady until the going down of the sun.

13 And Joshua weakened Amalek and his people with the mouth of the sword.