The Lord told Moses to go to Pharaoh, for he had hardened his heart to display his signs and so that Israel could tell their children and grandchildren what he did in Egypt, and know that he is the Lord. Moses and Aaron warned Pharaoh that, if he refused to humble himself, locusts would come that would cover the land and eat what the hail had left. Pharaoh's servants asked how long this man would be a snare to them and urged him to let the men go, because Egypt was already ruined.
Pharaoh called Moses and Aaron back and asked who would go. Moses answered that young and old would go, sons and daughters, flocks and herds, because it was a feast to the Lord. Pharaoh said that only the men would go, and drove them from his presence.
The Lord made an east wind blow all that day and night, and by morning it had brought the locusts. They covered the land, there had never been such a swarm before and never would be again, and they ate all the plants and the fruit of the trees, leaving nothing green in Egypt. Pharaoh hurriedly called Moses and Aaron, said he had sinned and asked forgiveness just this once. Moses prayed, and the Lord sent a strong west wind that swept the locusts into the Red Sea, not one left. But the Lord hardened Pharaoh's heart, and he did not let Israel go.
Then Moses stretched his hand toward heaven, and thick darkness covered Egypt for three days. No one saw anyone else or moved from his place, but all the Israelites had light in their dwellings. Pharaoh called Moses and allowed the people to go, but without their flocks and herds. Moses answered that not a hoof would be left behind, because they needed the animals to serve the Lord. The Lord hardened Pharaoh's heart, and he drove Moses out and told him never to see his face again, for the day he did he would die. Moses answered that he had spoken well and would not see his face again.