Then the magicians said to Pharaoh, "This is the finger of God." But Pharaoh's heart grew hard, and he did not heed them, just as the LORD had said.
Exodus 8:19
Surrounding context
8:18 Now the magicians so worked with their enchantments to bring forth lice, but they could not. So there were lice on man and beast.
8:19 Then the magicians said to Pharaoh, "This is the finger of God." But Pharaoh's heart grew hard, and he did not heed them, just as the LORD had said.
8:20 And the LORD said to Moses, "Rise early in the morning and stand before Pharaoh as he comes out to the water. Then say to him, "Thus says the LORD: "Let My people go, that they may serve Me.