Exodus 8:17-24

17They did so; and Aaron extended his hand with his staff and struck the dust of the earth, and there were 1gnats on every 2person and animal. All the dust of the earth turned into 34gnats through all the land of Egypt. 18The soothsayer priests tried with their secret arts to produce 5gnats, but 6they could not; so there were 7gnats on every person and animal. 19Then the soothsayer priests said to Pharaoh, “8This is the finger of God.” But Pharaoh’s heart was 9hardened, and he did not listen to them, just as the Lord had said.

20Then the Lord said to Moses, “10Rise early in the morning and present yourself before Pharaoh, 11as 12he comes out to the water; and say to him, ‘This is what the Lord says: “13Let My people go, so that they may serve Me. 21For if you are not going to let My people go, behold, I will send swarms of flies on you and on your servants and on your people, and into your houses; and the houses of the Egyptians will be full of swarms of flies, and also the ground on which they live. 2214But on that day I will set apart the land of Goshen, where My people are 15living, so that no swarms of flies will be there, in order that you may know that 1617I, the Lord, am in the midst of the land. 23I will 18put a division between My people and your people. Tomorrow this sign will occur.”’” 24Then the Lord did so. And 19thick swarms of flies entered the house of Pharaoh and the houses of his servants, and the land was 20laid waste because of the swarms of flies in all the land of Egypt.