Exodus 7:5-7

21st Century King James Version

⁵ And the Egyptians shall know that I am the Lord, when I stretch forth Mine hand upon Egypt and bring out the children of Israel from among them.”

⁶ And Moses and Aaron did as the Lord commanded them; so did they.

⁷ And Moses was fourscore years old, and Aaron fourscore and three years old when they spoke unto Pharaoh.