Exodus 9:34
But when Pharaoh saw that the rain and the ice-storm and the thunders were ended, he went on sinning, and made his heart hard, he and his servants.
Exodus 7:14
And the Lord said to Moses and Aaron, Pharaoh's heart is unchanged; he will not let the people go.
Exodus 4:21
And the Lord said to Moses, When you go back to Egypt, see that you do before Pharaoh all the wonders which I have given you power to do: but I will make his heart hard and he will not let the people go.
Exodus 8:15
But when Pharaoh saw that there was peace for a time, he made his heart hard and did not give ear to them, as the Lord had said.
2 Chronicles 28:22
And in the time of his trouble, this same King Ahaz did even more evil against the Lord.
2 Chronicles 33:23
He did not make himself low before the Lord, as his father Manasseh had done, but went on sinning more and more.
2 Chronicles 36:13
And he took up arms against King Nebuchadnezzar, though he had made him take an oath by God; but he made his neck stiff and his heart hard, turning away from the Lord, the God of Israel.
Ecclesiastes 8:11
Because punishment for an evil work comes not quickly, the minds of the sons of men are fully given to doing evil.
Romans 2:4-5
Or is it nothing to you that God had pity on you, waiting and putting up with you for so long, not seeing that in his pity God's desire is to give you a change of heart?