Exodus 17:9-11

Living Bible

⁹ Moses instructed Joshua to issue a call to arms to the Israelites, to fight the army of Amalek.

“Tomorrow,” Moses told him, “I will stand at the top of the hill, with the rod of God in my hand!”

¹⁰ So Joshua and his men went out to fight the army of Amalek. Meanwhile Moses, Aaron, and Hur^[a] went to the top of the hill. ¹¹ And as long as Moses held up the rod in his hands, Israel was winning; but whenever he rested his arms at his sides, the soldiers of Amalek were winning.