Numbers 20:8-11

20:8 “Take the staff and assemble the community, you and Aaron your brother, and then speak to the rock before their eyes. It will pour forth its water, and you will bring water out of the rock for them, and so you will give the community and their beasts water to drink.”

20:9 So Moses took the staff from before the Lord, just as he commanded him. 20:10 Then Moses and Aaron gathered the community together in front of the rock, and he said to them, “Listen, you rebels, must we bring water out of this rock for you?” 20:11 Then Moses raised his hand, and struck the rock twice with his staff. And water came out abundantly. So the community drank, and their beasts drank too.