Exodus 8:19 in the King James Version
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 the LORD had said.
Context
18 The magicians tried with their enchantments to produce lice, but they couldn’t. There were lice on man, and on animal.
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 the LORD had spoken.
20 The LORD 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 the LORD says, “Let my people go, that they may serve me.