Numbers 20:10-12

10Then 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?”

11Then 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.

12Then the Lord spoke to Moses and Aaron, “Because you did not trust me enough to show me as holy before the Israelites, therefore you will not bring this community into the land I have given them.”