num 20:9-12
So Moses took the staff from its place before the LORD, as he was ordered. He and Aaron assembled the community in front of the rock, where he said to them, "Listen to me, you rebels! Are we to bring water for you out of this rock?" Then, raising his hand, Moses struck the rock twice with his staff, and water gushed out in abundance for the community and their livestock to drink. But the LORD said to Moses and Aaron, "Because you were not faithful to me in showing forth my sanctity before the Israelites, you shall not lead this community into the land I will give them.".