Exodus 7:9 WBT

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

⁸  And the LORD spoke to Moses, and to Aaron, saying,

⁹  When Pharaoh shall speak to you, saying, Show a miracle for you: then thou shalt say to Aaron, Take thy rod, and cast [it] before Pharaoh, [and] it shall become a serpent.

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

¹¹  Then Pharaoh also called the wise-men, and the sorcerers: now the magicians of Egypt, they also did in like manner with their enchantments.