Exodus 17
14 Ref Yahweh said to Moses, "Write this for a memorial in a book, and rehearse it in the ears of Joshua: that I will utterly blot out the memory of Amalek from under the sky."
15 Ref Moses built an altar, and called the name of it Yahweh our Banner.{Hebrew, Yahweh Nissi}
16 Ref He said, "Yah has sworn: 'Yahweh will have war with Amalek from generation to generation.'"