Exodus 10:1-5

1Then the Lord said to Moses, “Go to Pharaoh, for I have hardened his heart and the hearts of his officials so that I may perform these signs of mine among them

2that you may tell your children and grandchildren how I dealt harshly with the Egyptians and how I performed my signs among them, and that you may know that I am the Lord.”

3So Moses and Aaron went to Pharaoh and said to him, “This is what the Lord, the God of the Hebrews, says: ‘How long will you refuse to humble yourself before me? Let my people go, so that they may worship me.

4If you refuse to let them go, I will bring locusts into your country tomorrow.

5They will cover the face of the ground so that it cannot be seen. They will devour what little you have left after the hail, including every tree that is growing in your fields.