Numbers 20:7-9

New Catholic Bible

⁷ The Lord spoke to Moses, saying, ⁸ “Take the staff, and you and Aaron your brother are to gather the assembly together. Speak to the rock in their sight and it will pour forth water. You will bring forth water from the rock for the assembly and their animals to drink.”

⁹ Moses took the staff from before the Lord, as he had been commanded.