Exodus 17:16 WEB

¹⁴  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  Moses built an altar, and called the name of it Yahweh our Banner.{Hebrew, Yahweh Nissi}

¹⁶  He said, 'Yah has sworn: 'Yahweh will have war with Amalek from generation to generation.''