Exodus 10:16-20

16Then Pharaoh called for Moses and Aaron in haste, and said, “I have sinned against the Lord your God and against you.

17Now therefore, please forgive my sin only this once, and entreat the Lord your God, that He may take away from me this death only.”

18So he went out from Pharaoh and entreated the Lord.

19And the Lord turned a very strong west wind, which took the locusts away and blew them into the Red Sea. There remained not one locust in all the territory of Egypt.

20But the Lord hardened Pharaoh’s heart, and he did not let the children of Israel go.