Exodus 10
17 Ref Let me now have forgiveness for my sin this time only, and make prayer to the Lord your God that he will take away from me this death only.
18 Ref So he went out from Pharaoh and made prayer to the Lord.
19 Ref And the Lord sent a very strong west wind, which took up the locusts, driving them into the Red Sea; not one locust was to be seen in any part of Egypt.
20 Ref But the Lord made Pharaoh's heart hard, and he did not let the children of Israel go.