Exodus 8:13

¹¹And when Pharaoh saw that there was relief, his heart was hardened, and he did not hearken to them, as the Lord spoke.

¹²And the Lord said to Moses, Say to Aaron, Stretch forth thy rod with thy hand and smite the dust of the earth; and there shall be lice both upon man, and upon quadrupeds, and in all the land of Egypt.

— Exodus 8:13 —

¹⁴And the charmers also did so with their sorceries, to bring forth the louse, and they could not. And the lice were both on the men and on the quadrupeds.

¹⁵So the charmers said to Pharaoh, This is the finger of God. But the heart of Pharaoh was hardened, and he hearkened not to them, as the Lord said.