Exodus 7:8-13

⁸Now the Lord spoke to Moses and Aaron, saying, ⁹“When Pharaoh speaks to you, saying, ‘Work a miracle,’ then you shall say to Aaron, ‘Take your staff and throw it down before Pharaoh, so that it may turn into a serpent.’ ” ¹⁰So Moses and Aaron came to Pharaoh, and so they did, just as the Lord had commanded; and Aaron threw his staff down before Pharaoh and his servants, and it turned into a serpent. ¹¹Then Pharaoh also called for the wise men and the sorcerers, and they too, the soothsayer priests of Egypt, did the same with their secret arts. ¹²For each one threw down his staff, and they turned into serpents. But Aaron’s staff swallowed their staffs. ¹³Yet Pharaoh’s heart was hardened, and he did not listen to them, just as the Lord had said.