Exodus 7:3-12

3But 1I will harden Pharaoh’s heart that I may 2multiply My signs and My wonders in the land of Egypt. 4When 3Pharaoh does not listen to you, then I will lay My hand on Egypt and 4bring out My hosts, My people the sons of Israel, from the land of Egypt by 5great judgments. 56The Egyptians shall know that I am the Lord, when I 7stretch out My hand on Egypt and bring out the sons of Israel from their midst.” 6So Moses and Aaron did it; 8as the Lord commanded them, thus they did. 7Moses was 9eighty years old and Aaron 10eighty-three, when they spoke to Pharaoh.

8Now the Lord spoke to Moses and Aaron, saying, 9“When Pharaoh speaks to you, saying, ‘1112Work a miracle,’ then you shall say to Aaron, ‘13Take your staff and throw it down before Pharaoh, that it may become a serpent.’” 10So Moses and Aaron came to Pharaoh, and thus they did just as the Lord had commanded; and Aaron threw his staff down before Pharaoh and 14his servants, and it 15became a serpent. 11Then Pharaoh also 16called for the wise men and the sorcerers, and they also, the 1718magicians of Egypt, did 19the same with 20their secret arts. 12For each one threw down his staff and they turned into serpents. But Aaron’s staff swallowed up their staffs.