Exodus 17:8-16

8And Amalek came and fought with Israel in Rephidim. 9And Moses said to Joshua, Choose us men, and go out, fight with Amalek; to-morrow I will stand on the top of the hill with the staff of 1God in my hand. 10And Joshua did as Moses had said to him, to fight with Amalek; and Moses, Aaron and Hur went up to the top of the hill. 11And it came to pass when Moses raised his hand, that Israel prevailed; and when he let down his hand, Amalek prevailed. 12And Moses' hands were heavy; then they took a stone, and put [it] under him, and he sat on it; and Aaron and Hur supported his hands, one on this side, and one on that side; and his hands were steady until the going down of the sun. 13And Joshua broke the power of Amalek and his people with the edge of the sword. 14And Jehovah said to Moses, Write this [for] a memorial in the book, and rehearse [it] in the ears of Joshua, that I will utterly blot out the remembrance of Amalek from under the heavens. 15And Moses built an altar, and called the name of it Jehovah-nissi. 16And he said, For the hand is on the throne of Jah; Jehovah will have war with Amalek from generation to generation!