¹³ And he hardened Pharaoh's heart, that he hearkened not unto them; as the Lord had said.

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.

³⁵ And the heart of Pharaoh was hardened, neither would he let the children of Israel go; as the Lord had spoken by Moses.