Exodus 17:9-11 ▼

9 and Moses says to Joshua, “Choose men for us, and go out, fight with Amalek: tomorrow I am standing on the top of the hill, and the rod of God in my hand.”

10 And Joshua does as Moses has said to him, to fight with Amalek, and Moses, Aaron, and Hur have gone up [to] the top of the height;

11 and it has come to pass, when Moses lifts up his hand, that Israel has been mighty, and when he lets his hands rest, that Amalek has been mighty.