Sh'mot (Exo) 17:1-7

(vii) The whole community of the people of Isra’el left the Seen Desert, traveling in stages, as ADONAI had ordered, and camped at Refidim; but there was no water for the people to drink. The people quarreled with Moshe, demanding, “Give us water to drink!” But Moshe replied, “Why pick a fight with me? Why are you testing ADONAI?” However, the people were thirsty for water there and grumbled against Moshe, “For what did you bring us up from Egypt? To kill us, our children and our livestock with thirst?” Moshe cried out to ADONAI, “What am I to do with these people? They’re ready to stone me!” ADONAI answered Moshe, “Go on ahead of the people, and bring with you the leaders of Isra’el. Take your staff in your hand, the one you used to strike the river; and go. I will stand in front of you there on the rock in Horev. You are to strike the rock, and water will come out of it, so the people can drink.” Moshe did this in the sight of the leaders of Isra’el. The place was named Massah [testing] and M’rivah [quarreling] because of the quarreling of the people of Isra’el and because they tested ADONAI by asking, “Is ADONAI with us or not?”