Exodus 8:19-21

World English Bible

¹⁹ Then the magicians said to Pharaoh, “This is God’s finger;” but Pharaoh’s heart was hardened, and he didn’t listen to them, as Yahweh had spoken.

²⁰ Yahweh said to Moses, “Rise up early in the morning, and stand before Pharaoh; behold, he comes out to the water; and tell him, ‘This is what Yahweh says, “Let my people go, that they may serve me. ²¹ Else, if you will not 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. The houses of the Egyptians shall be full of swarms of flies, and also the ground they are on.