Exodus 8:11-15

11the frogs will go away from you, your houses, your officials, and your people. The frogs will remain only in the Nile.”

12After Moses and Aaron went out from Pharaoh, Moses cried out to the Lord for help concerning the frogs that he had brought against Pharaoh.

13The Lord did as Moses had said: the frogs in the houses, courtyards, and fields died.

14They piled them in countless heaps, and there was a terrible odor in the land.

15But when Pharaoh saw there was relief, he hardened his heart and would not listen to them, as the Lord had said.