17. Now therefore forgive my sin, I pray you, only this once, and entreat the Lord your God only that He may remove from me this [plague of] death.
18. Then Moses left Pharaoh and entreated the Lord.
19. And the Lord turned a violent west wind, which lifted the locusts and drove them into the Red Sea; not one locust remained in all the country of Egypt.
20. But the Lord made Pharaoh's heart more strong and obstinate, and he would not let the Israelites go.