Numbers 20:6-8

⁶And Moses and Aaron went from the presence of the assembly unto the door of the tabernacle of the congregation, and they fell upon their faces: and the glory of the Lord appeared unto them.

⁷And the Lord spoke unto Moses, saying,

⁸Take the staff, and gather the assembly together, thou, with Aaron thy brother, and ye shall speak unto the rock before their eyes, that it shall give forth its water; and thou shalt bring forth for them water out of the rock, and give drink to the congregation and their cattle.