Exodus 17:12-14

Revised Standard Version

¹² But Moses’ hands grew weary; so they took a stone and put it under him, and he sat upon it, and Aaron and Hur held up his hands, one on one side, and the other on the other side; so his hands were steady until the going down of the sun. ¹³ And Joshua mowed down Am′alek and his people with the edge of the sword.

¹⁴ And the Lord said to Moses, “Write this as a memorial in a book and recite it in the ears of Joshua, that I will utterly blot out the remembrance of Am′alek from under heaven.”