'Heart Was Hardened' in the Bible

And Pharaoh's heart was hardened, and he hearkened not unto them; as Jehovah had spoken.

And the magicians of Egypt did in like manner with their enchantments: and Pharaoh's heart was hardened, and he hearkened not unto them; as Jehovah had spoken.

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 Jehovah had spoken.