Exodus 17:9-11

Amplified Bible, Classic Edition

⁹ And Moses said to Joshua, Choose us out men and go out, fight with Amalek. Tomorrow I will stand on the top of the hill with the rod of God in my hand.

¹⁰ So Joshua did as Moses said and fought with Amalek; and Moses, Aaron, and Hur went up to the hilltop.

¹¹ When Moses held up his hand, Israel prevailed; and when he lowered his hand, Amalek prevailed.