Exodus 7:7-9

Amplified Bible, Classic Edition

⁷ Now Moses was 80 years old and Aaron 83 years old when they spoke to Pharaoh.

⁸ And the Lord said to Moses and Aaron,

⁹ When Pharaoh says to you, Prove [your authority] by a miracle, then tell Aaron, Throw your rod down before Pharaoh, that it may become a serpent.