Exodus 17:12-14

21st Century King James Version

¹² But Moses’ hands were heavy; and they took a stone and put it under him, and he sat thereon. And Aaron and Hur held up his hands, the one on the one side and the other on the other side; and his hands were steady until the going down of the sun.

¹³ And Joshua discomfited Amalek and his people with the edge of the sword.

¹⁴ And the Lord said unto Moses, “Write this for a memorial in a book, and recount it in the ears of Joshua; for I will utterly put out the remembrance of Amalek from under heaven.”