Numbers 20:6-12

And Moses and Aaron, dismissing the multitude, entered the tabernacle of the covenant, and they fell prone on the ground, and they cried out to the Lord, and they said: "O Lord God, listen to the outcry of this people, and open for them, from your storehouse, a fountain of living water, so that, being satisfied, their murmuring may cease." And the glory of the Lord appeared over them. And the Lord spoke to Moses, saying: "Take the rod, and gather the people, you and your brother Aaron, and speak to the rock before them, and it shall bestow waters. And when you have brought forth water from the rock, the entire multitude and their cattle shall drink." Therefore, Moses took the rod, which was in the sight of the Lord, just as he had instructed him. And having gathered the multitude before the rock, he said to them: "Listen, you who are rebellious and unbelieving. Would we be able to cast out water from this rock?" And when Moses had lifted up his hand, striking the stone twice with the rod, very great waters went forth, so much so that the people and their cattle were able to drink. And the Lord said to Moses and Aaron, "Because you did not believe me, so as to sanctify me before the sons of Israel, you shall not lead this people into the land, which I will give to them."