Exodus 17:5-7

Young's Literal Translation

⁵ And Jehovah saith unto Moses, `Pass over before the people, and take with thee of the elders of Israel, and thy rod with which thou hast smitten the River take in thy hand, and thou hast gone:

⁶ Lo, I am standing before thee there on the rock in Horeb, and thou hast smitten on the rock, and waters have come out from it, and the people have drunk.' And Moses doth so before the eyes of the elders of Israel,

⁷ and he calleth the name of the place Massah, and Meribah, because of the `strife' of the sons of Israel, and because of their `trying' Jehovah, saying, `Is Jehovah in our midst or not?'