Numbers 20:7-11

7And the LORD spoke to Moses, saying,

8Take the rod, and gather thou the assembly together, thou, and Aaron thy brother, and speak ye to the rock before their eyes; and it shall give forth its water, and thou shalt bring forth to them water out of the rock: so thou shalt give water to the congregation and their beasts.

9And Moses took the rod from before the LORD, as he commanded him.

10And Moses and Aaron gathered the congregation together before the rock, and he said to them, Hear now, ye rebels; must we fetch you water out of this rock?

11And Moses lifted up his hand, and with his rod he smote the rock twice: and the water came out abundantly, and the congregation drank, and their beasts also .