Then Moses and Aaron went to Pharaoh and did just as the Lord had commanded. Aaron threw his staff down before Pharaoh and his servants, and it turned into a serpent.
This, then, is what Moses and Aaron did, exactly as the Lord had commanded. Aaron raised his staff and struck the waters in the Nile in full view of Pharaoh and his servants, and all the water in the Nile was changed into blood.