Exodus 8:18-19
Exodus 8:18-19 ASV
And the magicians did so with their enchantments to bring forth lice, but they could not: and there were lice upon man, and upon beast. Then the magicians said unto Pharaoh, This is the finger of God: and Pharaoh’s heart was hardened, and he hearkened not unto them; as Jehovah had spoken.