Exodus 7:7-9

New Revised Standard Version, Anglicised Catholic Edition

⁷ Moses was eighty years old and Aaron eighty-three when they spoke to Pharaoh.

Aaron’s Miraculous Rod

⁸ The Lord said to Moses and Aaron, ⁹ ‘When Pharaoh says to you, “Perform a wonder”, then you shall say to Aaron, “Take your staff and throw it down before Pharaoh, and it will become a snake.”’