Exodus 17:14-16 ▼

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.”