Exodus 10:9

6 And your houses will be full of them, and the houses of your servants and of all the Egyptians; it will be worse than anything your fathers have seen or their fathers, from the day when they were living on the earth till this day. And so he went out from Pharaoh.

7 And Pharaoh's servants said to him, How long is this man to be the cause of evil to us? let the men go so that they may give worship to the Lord their God: are you not awake to Egypt's danger?

8 Then Moses and Aaron came in again before Pharaoh: and he said to them, Go and give worship to the Lord your God: but which of you are going?

9 And Moses said, We will go with our young and our old, with our sons and our daughters, with our flocks and our herds; for we are to keep a feast to the Lord.

10 And he said to them, May the Lord be with you, if I will let you and your little ones go! take care, for your purpose clearly is evil.

11 Not so; but let your males go and give worship to the Lord, as your desire is. This he said, driving them out from before him.

12 And the Lord said to Moses, Let your hand be stretched out over the land of Egypt so that the locusts may come up on the land for the destruction of every green plant in the land, even everything untouched by the ice-storm.