Exodus 10
17 Ref Now therefore forgive, I pray thee, my sin only this once, and entreat the LORD your God, that he may take away from me this death only.
18 Ref And he went out from Pharaoh, and entreated the LORD.
19 Ref And the LORD turned a mighty strong west wind, which took away the locusts, and cast them into the Red sea; there remained not one locust in all the coasts of Egypt.
20 Ref But the LORD hardened Pharaoh's heart, so that he would not let the children of Israel go.