Exodus 17:13-15

New International Version - UK

¹³ So Joshua overcame the Amalekite army with the sword.

¹⁴ Then the Lord said to Moses, ‘Write this on a scroll as something to be remembered and make sure that Joshua hears it, because I will completely blot out the name of Amalek from under heaven.’

¹⁵ Moses built an altar and called it The Lord is my Banner.