5. The Lord answered Moses. He said, "Walk on ahead of the people. Take some of the elders of Israel along with you. Take in your hand the wooden staff you used when you struck the Nile River. Go.
6. I will stand there in front of you by the rock at Mount Horeb. Hit the rock. Then water will come out of it for the people to drink." So Moses hit the rock in the sight of the elders of Israel.
7. Moses called the place Massah and Meribah. That's because the people of Israel argued with him there. They also put the Lord to the test. They asked, "Is the Lord among us or not?"
8. The Amalekites came and attacked the Israelites at Rephidim.
9. Moses said to Joshua, "Choose some of our men. Then go out and fight against the Amalekites. Tomorrow I will stand on top of the hill. I'll stand there with the staff of God in my hands."
10. So Joshua fought against the Amalekites, just as Moses had ordered. Moses, Aaron and Hur went to the top of the hill.
11. As long as Moses held his hands up, the Israelites were winning. But every time he lowered his hands, the Amalekites began to win.