Exodus 17:2-7

2So the people contended with Moses, “Give us water to drink.”

“Why do you contend with me?” Moses replied. “Why do you test the LORD?”

3But the people thirsted for water there, and they grumbled against Moses: “Why have you brought us out of Egypt—to make us and our children and livestock die of thirst?”

4Then Moses cried out to the LORD, “What should I do with these people? A little more and they will stone me!”

5And the LORD said to Moses, “Walk on ahead of the people and take some of the elders of Israel with you. Take along in your hand the staff with which you struck the Nile, and go. 6Behold, I will stand there before you by the rock at Horeb.1 And when you strike the rock, water will come out of it for the people to drink.”

So Moses did this in the sight of the elders of Israel. 7He named the place Massah2 and Meribah3 because the Israelites quarreled, and because they tested the LORD, saying, “Is the LORD among us or not?”