6. Indeed, I will stand before you there on the rock in Horeb, and you shall strike the rock, and there water shall come out of it, so that the people may drink.” Then Moses did so in the sight of the elders of Israel.
7. He called the name of the place Massah, and Meribah, because of the contending of the children of Israel, and because they tested the Lord, saying, “Is the Lord among us, or not?”
8. Then Amalek came and fought with Israel in Rephidim.
9. So Moses said to Joshua, “Choose men for us and go out, fight against Amalek. Tomorrow I will stand on the top of the hill with the rod of God in my hand.”
10. So Joshua did as Moses had said to him and fought against Amalek. And Moses, Aaron, and Hur went up to the top of the hill.
11. Now when Moses held up his hand, Israel prevailed, but when he let down his hand, Amalek prevailed.
12. But Moses’ hands became heavy. 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 laid low Amalek and his people with the edge of the sword.
14. Then the Lord said to Moses, “Write this as a memorial in a book and rehearse it to Joshua, for I will utterly wipe out the remembrance of Amalek from under heaven.”
15. Then Moses built an altar and called the name of it, The Lord Is My Banner;
16. for he said, “For the Lord has sworn that the Lord will have war with Amalek from generation to generation.”