Thematic Bible: Proclaiming war

And Yahweh said to Moses, "Write this [as] a memorial in the scroll and {recite it in the hearing of} Joshua, because I will utterly blot out the remembrance of Amalek from under the heavens." And Moses built an altar, and he called its name Yahweh [Is] My Banner. And he said, "Because a hand [was] against the throne of Yah, a war [will be] for Yahweh with Amalek from generation [to] generation."

Yahweh spoke to Moses, saying, "Seek vengeance for the {Israelites} on the Midianites; afterward you will be gathered to your people."