19Then the wonder-workers said to Pharaoh, This is the finger of God: but Pharaoh's heart was hard, and he did not give ear to them, as the Lord had said.
20And the Lord said to Moses, Get up early in the morning and take your place before Pharaoh when he comes out to the water; and say to him, This is what the Lord says: Let my people go to give me worship.
21For if you do not let my people go, see, I will send clouds of flies on you and on your servants and on your people and into their houses; and the houses of the Egyptians and the land where they are will be full of flies.
22And at that time I will make a division between your land and the land of Goshen where my people are, and no flies will be there; so that you may see that I am the Lord over all the earth.
23And I will put a division between my people and your people; tomorrow this sign will be seen.
24And the Lord did so; and great clouds of flies came into the house of Pharaoh and into his servants' houses, and all the land of Egypt was made waste because of the flies.
25And Pharaoh sent for Moses and Aaron and said, Go and make your offering to your God here in the land.