Then the magicians said unto Pharaoh, This [is] (f) the finger of God: and Pharaoh's heart was hardened, and he hearkened not unto them; as the LORD had said.
(f) They acknowledged that this was done by God's power and not by sorcery; (Luke 11:20).
Related Commentaries of Exodus 8:19
Exodus 8:19
19 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.