Exodus 10:17-20

“Forgive my sin, just this once, and plead with the LORD your God to take away this death from me.” So Moses left Pharaoh’s court and pleaded with the LORD. The LORD responded by shifting the wind, and the strong west wind blew the locusts into the Red Sea. Not a single locust remained in all the land of Egypt. But the LORD hardened Pharaoh’s heart again, so he refused to let the people go.