Numbers 20:9

6 Then Moses and Aaron went away from the people to the door of the Tent of meeting; and, falling on their faces there, they saw the glory of the Lord.

7 And the Lord said to Moses,

8 Take the rod, you and Aaron, your brother, and make all the people come together, and before their eyes give orders to the rock to give out its water; and so make water come out of the rock for them, and give the people and their cattle drink.

9 And Moses took the rod from before the Lord as he gave him orders.

10 Then Moses and Aaron made the people come together in front of the rock, and he said to them, Give ear now, you people whose hearts are turned from the Lord; are we to get water for you out of the rock?

11 And lifting up his hand, Moses gave the rock two blows with his rod: and water came streaming out, and the people and their cattle had drink enough.

12 Then the Lord said to Moses and Aaron, Because you had not enough faith in me to keep my name holy before the children of Israel, you will not take this people into the land which I have given them.