Exodus 17:9-10

New King James Version

⁹ And Moses said to Joshua, “Choose us some men and go out, fight with Amalek. Tomorrow I will stand on the top of the hill with ^(A)the rod of God in my hand.” ¹⁰ So Joshua did as Moses said to him, and fought with Amalek. And Moses, Aaron, and Hur went up to the top of the hill.