Exodus 17:3, 5-7

But the people were thirsty for water there. They complained to Moses, “Why did you take us from Egypt and drag us out here with our children and animals to die of thirst?”

GOD said to Moses, “Go on out ahead of the people, taking with you some of the elders of Israel. Take the staff you used to strike the Nile. And go. I’m going to be present before you there on the rock at Horeb. You are to strike the rock. Water will gush out of it and the people will drink.” * * *