Exodus 10:7

5and they shall cover the surface of the earth, so that one won’t be able to see the earth. They shall eat the residue of that which has escaped, which remains to you from the hail, and shall eat every tree which grows for you out of the field.

6Your houses shall be filled, and the houses of all your servants, and the houses of all the Egyptians, as neither your fathers nor your fathers’ fathers have seen, since the day that they were on the earth to this day.’” He turned, and went out from Pharaoh.

7Pharaoh’s servants said to him, “How long will this man be a snare to us? Let the men go, that they may serve the LORD, their God. Don’t you yet know that Egypt is destroyed?”

8Moses and Aaron were brought again to Pharaoh, and he said to them, “Go, serve the LORD your God; but who are those who will go?”

9Moses said, “We will go with our young and with our old. We will go with our sons and with our daughters, with our flocks and with our herds; for we must hold a feast to the LORD.”