Exodus 17:8-10

The Amalekites Defeated 8The Amalekites came and attacked the Israelites at Rephidim.

9Moses said to Joshua, “Choose some of our men and go out to fight the Amalekites. Tomorrow I will stand on top of the hill with the staff of God in my hands.” 10So Joshua fought the Amalekites as Moses had ordered, and Moses, Aaron and Hur went to the top of the hill.