Exodus 17:6-7

Behold, I will stand there before you by the rock at Horeb. 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. He named the place Massah and Meribah because the Israelites quarreled, and because they tested the LORD, saying, “Is the , saying, “Is the LORD among us or not?”