Exodus 7, 21 – 24 „The fish in the Nile died, and the Nile itself stank so that the Egyptians could not drink water from it. There was blood throughout the land of Egypt. 22But the Egyptian magicians did the same by their magic arts. So Pharaoh hardened his heart and would not listen to them, just as the LORD had said. 23Pharaoh turned away and went into his house, with no concern even for this. 24All the Egyptians had to dig round about the Nile for drinking water, since they could not drink any water from the Nile”.