Exodus 17:14-16
14Then Yahweh said to Moses, “aWrite this in 1a book as a memorial and 2recite it in Joshua’s hearing, 3that bI will utterly blot out the memory of Amalek from under heaven.” 15And Moses built an aaltar and named it bYahweh is My Banner; 16and he said, “aBecause He has sworn with a hand upon the throne of Yah, Yahweh will have war against Amalek from generation to generation.”