Exodus 7:9 WEB

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

⁸  Yahweh spoke to Moses and to Aaron, saying,

⁹  'When Pharaoh speaks to you, saying, 'Perform a miracle!' then you shall tell Aaron, 'Take your rod, and cast it down before Pharaoh, that it become a serpent.''

¹⁰  Moses and Aaron went in to Pharaoh, and they did so, as Yahweh had commanded: and Aaron cast down his rod before Pharaoh and before his servants, and it became a serpent.

¹¹  Then Pharaoh also called for the wise men and the sorcerers. They also, the magicians of Egypt, did in like manner with their enchantments.