Exodus 17:13-16 ▼

13 So Joshua overwhelmed Amalek and his people with the edge of the sword.

14 Then the LORD said to Moses, “Write this in a book as a memorial and recite it to Joshua, that I will utterly blot out the memory of Amalek from under heaven.”

15 Moses built an altar and named it The LORD is My Banner;

16 and he said, “The LORD has sworn; the LORD will have war against Amalek from generation to generation.”