Exodus 10:17-20

10:17 So now, forgive my sin this time only, and pray to the Lord your God that he would only take this death away from me.” 10:18 Moses went out from Pharaoh and prayed to the Lord, 10:19 and the Lord turned a very strong west wind, and it picked up the locusts and blew them into the Red Sea. Not one locust remained in all the territory of Egypt. 10:20 But the Lord hardened Pharaoh’s heart, and he did not release the Israelites.