21. But if you are not about to release my people, look, I am about to send out flies among you and among your servants and among your people and in your houses; and the houses of Egypt will fill up with the flies and also the ground that they are on.
22. But on that day I will distinguish the land of Goshen, where my people are staying, by there not being flies there, so that you will know that I am Yahweh in the midst of the land.
23. And I will put a distinction between my people and your people; this sign will be tomorrow.’ ”
24. And Yahweh did so, and a severe swarm of flies came to the house of Pharaoh and the house of his servants and in all the land of Egypt; the land was ruined because of the flies.
25. And Pharaoh called Moses and Aaron, and he said, “Go, sacrifice to your God in the land.”
26. And Moses said, “To do so is not right, because we will sacrifice to Yahweh our God a thing detestable to the Egyptians. Look, if we sacrifice before their eyes the thing detestable to the Egyptians, will they not stone us?
27. We will go a journey of three days into the desert, and we will sacrifice to Yahweh our God according to what he says to us.”