Ex 10:1-5

Eighth Plague: The Locusts. 1Then the LORD said to Moses: Go to Pharaoh, for I have made him and his servants obstinate in order that I may perform these signs of mine among them 2and that you may recount to your son and grandson how I made a fool of the Egyptians and what signs I did among them, so that you may know that I am the LORD.^a

3So Moses and Aaron went to Pharaoh and told him, “Thus says the LORD, the God of the Hebrews: How long will you refuse to submit to me? Let my people go to serve me. 4For if you refuse to let my people go, tomorrow I will bring locusts into your territory. 5They will cover the surface of the earth, so that the earth itself will not be visible. They will eat up the remnant you saved undamaged from the hail, as well as all the trees that are growing in your fields.