Exodus 8:19-21
Wycliffe Bible
19 And the witches said to Pharaoh, This is the finger of God. And the heart of Pharaoh was made hard, and he heard not them, as the Lord commanded (But Pharaoh’s heart was hardened, and he would not listen to them, as the Lord had said).
20 And the Lord said to Moses, Rise thou (up) early, and stand before Pharaoh, for he shall go out to the waters; and thou shalt say to him, The Lord saith these things, Deliver thou my people, that it make sacrifice to me (The Lord saith these things, Let my people go, so that they can worship me);
21 that if thou wilt not deliver the people (but if thou wilt not let the people go), lo! I shall send into thee, and into thy servants, and into thy people, and into thine houses, all the kind(s) of flies; and the houses of the Egyptians shall be full-filled with flies of diverse kinds, and all the land in which they shall be.
Read full chapter2001 by Terence P. Noble