Exodus 7:7-9

English Standard Version

⁷ Now Moses was ^(A)eighty years old, and Aaron eighty-three years old, when they spoke to Pharaoh.

⁸ Then the Lord said to Moses and Aaron, ⁹ “When Pharaoh says to you, ^(B)‘Prove yourselves by working a miracle,’ then you shall say to Aaron, ‘Take your staff and cast it down before Pharaoh, that it may become a serpent.’”