And he also rebelled against king Nebuchadnezzar, who had made him swear by God: but he stiffened his neck, and hardened his heart against turning unto the LORD God of Israel.
And the LORD said unto Moses, Go in unto Pharaoh: for I have hardened his heart, and the heart of his servants, that I might show these my signs before him:
And I, behold, I will harden the hearts of the Egyptians, and they shall follow them: and I will get honor over Pharaoh, and over all his host, over his chariots, and over his horsemen.
And the LORD said unto Moses, When you go to return into Egypt, see that you do all those wonders before Pharaoh, whom I have put in your hand: but I will harden his heart, that he shall not let the people go.
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.
And Pharaoh said, I will let you go, that you may sacrifice to the LORD your God in the wilderness; only you shall not go very far away: entreat for me.
And Pharaoh sent, and, behold, there was not one of the cattle of the Israelites dead. And the heart of Pharaoh was hardened, and he did not let the people go.
But according to your hardness and unrepentant heart treasure up unto yourself wrath against the day of wrath and revelation of the righteous judgment of God;
But Sihon king of Heshbon would not let us pass by him: for the LORD your God hardened his spirit, and made his heart obstinate, that he might deliver him into your hand, as it is this day.
Why then do you harden your hearts, as the Egyptians and Pharaoh hardened their hearts? when he had worked wonderfully among them, did they not let the people go, and they departed?