Exodus 7:22-24

The Voice

²² But Pharaoh summoned the most talented magicians in Egypt who performed the same act with their own incantations. So Pharaoh’s heart remained as hard as stone, and he paid no attention to Moses and Aaron just as the Eternal had predicted. ²³ Then Pharaoh turned and went back to his house without giving this wondrous miracle a second thought.

²⁴ The Egyptians had to dig wells along the edge of the Nile in order to have water to drink, because they were no longer able to drink from the Nile.