Exodus 17:8–16
8 nNow Amalek came and fought with Israel in Rephidim. 9 And Moses said to Joshua, “Choose us some men and go out, fight with Amalek. Tomorrow I will stand on the top of the hill with othe rod of God in my hand.” 10 So Joshua did as Moses said to him, and fought with Amalek. And Moses, Aaron, and Hur went up to the top of the hill. 11 And so it was, when Moses pheld up his hand, that Israel prevailed; and when he let down his hand, Amalek prevailed. 12 But Moses’ hands became 5heavy; so they took a stone and put it under him, and he sat on it. And Aaron and Hur supported his hands, one on one side, and the other on the other side; and his hands were steady until the going down of the sun. 13 So Joshua defeated Amalek and his people with the edge of the sword.
14 Then the Lord said to Moses, q“Write this for a memorial in the book and recount it in the hearing of Joshua, that rI will utterly blot out the remembrance of Amalek from under heaven.” 15 And Moses built an altar and called its name, 6The-Lord-Is-My-Banner; 16 for he said, “Because 7the Lord has ssworn: the Lord will have war with Amalek from generation to generation.”