He also rebelled against King Nebuchadnezzar, who had made him swear by God; he stiffened his neck and hardened his heart against turning to the Lord, the God of Israel.
And the Lord said to Moses, “When you go back to Egypt, see that you perform before Pharaoh all the wonders that I have put in your power, but I will harden his heart, so that he will not let the people go.
So Moses left Pharaoh, went out of the city, and stretched out his hands to the Lord; then the thunder and the hail ceased, and the rain no longer poured down on the earth.
Why should you harden your hearts as the Egyptians and Pharaoh hardened their hearts? After he had made fools of them, did they not let the people go, and they departed?