Exodus 10:1-5

1Then the Lord said to Moses, “Go to Pharaoh, for I have hardened his heart and the heart of his servants [making them determined and unresponsive], so that I may exhibit My signs [of divine power] among them,

2and that you may recount and explain in the hearing of your son, and your grandson, what I have done [repeatedly] to make a mockery of the Egyptians—My signs [of divine power] which I have done among them—so that you may know [without any doubt] and recognize [clearly] that I am the Lord.”

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

4For if you refuse to let My people go, then hear this: tomorrow I will bring [migratory] locusts into your country.

5They shall cover the [visible] surface of the land, so that no one will be able to see the ground, and they will eat the rest of what has remained—that is, the vegetation left after the hail—and they will eat every one of your trees that grows in the field;