Exodus 8:11

7 But the magicians did the same thing by their magic arts, and they also brought frogs up onto the land of Egypt.

8 Pharaoh summoned Moses and Aaron and said, “Pray to the LORD to take the frogs away from me and my people. Then I will let your people go, that they may sacrifice to the LORD.”

9 Moses said to Pharaoh, “You may have the honor over me. When shall I pray for you and your officials and your people that the frogs (except for those in the Nile) may be taken away from you and your houses?”

10 “Tomorrow,” Pharaoh answered. “May it be as you say,” Moses replied, “so that you may know that there is no one like the LORD our God.

11 The frogs will depart from you and your houses and your officials and your people; they will remain only in the Nile.”

12 After Moses and Aaron had left Pharaoh, Moses cried out to the LORD for help with the frogs that He had brought against Pharaoh.

13 And the LORD did as Moses requested, and the frogs in the houses, the courtyards, and the fields died.

14 They were piled into countless heaps, and there was a terrible stench in the land.

15 When Pharaoh saw that there was relief, however, he hardened his heart and would not listen to Moses and Aaron, just as the LORD had said.

Read all of Exodus 8