11 Then Pharaoh summoned the wise men and the sorcerers, and they, the magicians of Egypt, also did the same by their secret arts. 12 For each man cast down his staff, and they became serpents. But Aaron's staff swallowed up their staffs. 13 Still Pharaoh's heart was hardened, and he would not listen to them, as the Lord had said.
14 Then the Lord said to Moses, “Pharaoh's heart is hardened; he refuses to let the people go. 15 Go to Pharaoh in the morning, as he is going out to the water. Stand on the bank of the Nile to meet him, and take in your hand the staff that turned into a serpent. 16 And you shall say to him, ‘The Lord, the God of the Hebrews, sent me to you, saying, “Let my people go, that they may serve me in the wilderness. But so far, you have not obeyed.” 17 Thus says the Lord, “By this you shall know that I am the Lord: behold, with the staff that is in my hand I will strike the water that is in the Nile, and it shall turn into blood. 18 The fish in the Nile shall die, and the Nile will stink, and the Egyptians will grow weary of drinking water from the Nile.”’” 19 And the Lord said to Moses, “Say to Aaron, ‘Take your staff and stretch out your hand over the waters of Egypt, over their rivers, their canals, and their ponds, and all their pools of water, so that they may become blood, and there shall be blood throughout all the land of Egypt, even in vessels of wood and in vessels of stone.’”
20 Moses and Aaron did as the Lord commanded. In the sight of Pharaoh and in the sight of his servants he lifted up the staff and struck the water in the Nile, and all the water in the Nile turned into blood. 21 And the fish in the Nile died, and the Nile stank, so that the Egyptians could not drink water from the Nile. There was blood throughout all the land of Egypt. 22 But the magicians of Egypt did the same by their secret arts. So Pharaoh's heart remained hardened, and he would not listen to them, as the Lord had said. 23 Pharaoh turned and went into his house, and he did not take even this to heart.
21 Then the Lord said to Moses, “Stretch out your hand toward heaven, that there may be darkness over the land of Egypt, a darkness to be felt.” 22 So Moses stretched out his hand toward heaven, and there was pitch darkness in all the land of Egypt three days. 23 They did not see one another, nor did anyone rise from his place for three days, but all the people of Israel had light where they lived. 24 Then Pharaoh called Moses and said, “Go, serve the Lord; your little ones also may go with you; only let your flocks and your herds remain behind.” 25 But Moses said, “You must also let us have sacrifices and burnt offerings, that we may sacrifice to the Lord our God. 26 Our livestock also must go with us; not a hoof shall be left behind, for we must take of them to serve the Lord our God, and we do not know with what we must serve the Lord until we arrive there.” 27 But the Lord hardened Pharaoh's heart, and he would not let them go. 28 Then Pharaoh said to him, “Get away from me; take care never to see my face again, for on the day you see my face you shall die.” 29 Moses said, “As you say! I will not see your face again.” (ESV)