So Moses and Aaron went to Pharaoh and said, “This is what the Lord, the God of the Hebrews says:”How long will your refuse to submit to Me? Let My people go, sow they can worship Me. If you refuse, Watch out! For tomorrow I will bring a swarm of locusts on your country. They will cover the ground so that you won’t be able to see the ground. They will devour what little is left of your crops after the hailstorm, including all the trees growing in the fields. They will overrun your palaces and the homes of your officials and all the houses in Egypt. Never in the history of Egypt have your ancestors seen a plague like this one!'” (vv. 3-6, NLT)
Then the Lord said to Moses, “Raise your hand over the land of Egypt to bring on the locusts. Let the cover the land and devour every plant that survived the hailstorm.”
So Moses raised his staff over Egypt, and the Lord caused an east wind to blow over the land al that day through the night. When morning arrived, the east wind had brought the locusts. And the locusts swarmed over the whole land of Egypt, settling in dense swarms from one end of the country to the other. It was the worst locust plague in Egyptian history, and there has never been another one like it. For the locusts covered the whole country and darkened the land. They devoured every plant in the fields and all of the fruit on the trees that had survived the hailstorm. Not a single leaf was left on the trees and plants through the land of Egypt.
Pharaoh quickly summoned Moses and Aaron. “I have sinned against the Lord our God and against you,” he professed. “Forgive my sin, just this one, and plead with the Lord you God to take away this death from me.”
So Moses left Pharaoh’s court and pleaded with the Lord. The Lord responded by shifting the wind, and the strong west wind blew the locust in to the Red Sea. Not a single locust remained in all the land of Egypt. but the Lord hardened Pharaoh’s heart again, so he refused to let his people go. (vv. 12-20, NLT)