10. So Moses and Aaron went in to Pharaoh and did as Adonai had commanded. Aaron threw down his staff before Pharaoh and before his servants, and it became a serpent.
11. Then Pharaoh called for the wise men and the sorcerers, and they too, the magicians of Egypt, did the same with their secret arts.
12. For each man threw down his staff, and they became serpents. But Aaron’s staff swallowed up their staffs.
13. Yet Pharaoh’s heart was hardened. So he did not listen to them— just as Adonai had said.
14. Then Adonai said to Moses, “Pharaoh’s heart is stubborn; he refuses to let the people go.
15. Go to Pharaoh in the morning as he is coming out to the water, and stand ready to meet him by the bank of the Nile. Take the staff that was transformed into a serpent in your hand.
16. You are to say to him: Adonai, God of the Hebrews, has sent me to you, saying, ‘Let My people go, so they may serve Me in the wilderness,’ and behold, you have not listened.
17. This is what Adonai says: ‘By this you will know that I am Adonai. Behold, I will strike the waters that are in the river with the staff that is in my hand, and they will be turned to blood.