Exodus 7:14 KJV
And the Lord said unto Moses, Pharaoh’s heart is hardened, he refuseth to let the people go.
Exodus 7:14, King James Version
In context
13 And he hardened Pharaoh’s heart, that he hearkened not unto them; as the Lord had said.
14 And the Lord said unto Moses, Pharaoh’s heart is hardened, he refuseth to let the people go.
15 Get thee unto Pharaoh in the morning; lo, he goeth out unto the water; and thou shalt stand by the river’s brink against he come; and the rod which was turned to a serpent shalt thou take in thine hand.