Exodus 7:6-9

English Standard Version

Chapter 7

6 Moses and Aaron did so; they did just as the LORD commanded them. 7 Now Moses was 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, ‘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.’”