All the Egyptians had to dig round about the Nile for drinking water, since they could not drink any water from the Nile. Second Plague: The Frogs.
The fish in the Nile will die, and the Nile itself will stink so that the Egyptians will be unable to drink water from the Nile.
Pharaoh turned away and went into his house, with no concern even for this.
Seven days passed after the Lord had struck the Nile.