Exodus 17
6 Ref See, I will take my place before you on the rock in Horeb; and when you give the rock a blow, water will come out of it, and the people will have drink. And Moses did so before the eyes of the chiefs of Israel.
7 Ref And he gave that place the name Massah and Meribah, because the children of Israel were angry, and because they put the Lord to the test, saying, Is the Lord with us or not?