Exodus 10:1-5

1Now the Lord said to Moses, “Go in to Pharaoh; for I have hardened his heart and the hearts of his servants, that I may show these signs of Mine before him,

2and that you may tell in the hearing of your son and your son’s son the mighty things I have done in Egypt, and My signs which I have done among them, that you may know that I am the Lord.”

3So Moses and Aaron came in to Pharaoh and said to him, “Thus says the Lord God of the Hebrews: ‘How long will you refuse to humble yourself before Me? Let My people go, that they may serve Me.

4Or else, if you refuse to let My people go, behold, tomorrow I will bring locusts into your territory.

5And they shall cover the face of the earth, so that no one will be able to see the earth; and they shall eat the residue of what is left, which remains to you from the hail, and they shall eat every tree which grows up for you out of the field.