Exodus 10
17 Ref Now therefore please forgive my sin again, and pray to Yahweh your God, that he may also take away from me this death."
18 Ref He went out from Pharaoh, and prayed to Yahweh.
19 Ref Yahweh turned an exceeding strong west wind, which took up the locusts, and drove them into the Red Sea. There remained not one locust in all the borders of Egypt.
20 Ref But Yahweh hardened Pharaoh's heart, and he didn't let the children of Israel go.