Exodus 17
1 The whole group of Israel moved on from the wild desert of Sin. They went step by step, following where Yahweh led. They set up camp at Rephidim. But there was no water anywhere for the people to drink!
5 Yahweh told Moses, "Walk ahead of the people. Take some of the leaders of Israel with you. Carry your staff. It is the same one you used to hit the Nile River. Now go."
8 Then the fighters of Amalek came. They attacked Israel at Rephidim!
11 When Moses held his hand up high, Israel pushed forward and won! When his tired hand dropped down, Amalek pushed back and won!