Exodus 9:34
When Pharaoh saw that the rain and the hail and the thunders were ceased, he sinned yet more, and hardened his heart, he and his servants.
Exodus 7:14
Yahweh said to Moses, "Pharaoh's heart is stubborn. He refuses to let the people go.
Exodus 4:21
Yahweh said to Moses, "When you go back into Egypt, see that you do before Pharaoh all the wonders which I have put in your hand, but I will harden his heart and he will not let the people go.
Exodus 8:15
But when Pharaoh saw that there was a respite, he hardened his heart, and didn't listen to them, as Yahweh had spoken.
2 Chronicles 28:22
In the time of his distress did he trespass yet more against Yahweh, this same king Ahaz.
2 Chronicles 33:23
He didn't humble himself before Yahweh, as Manasseh his father had humbled himself; but this same Amon trespassed more and more.
2 Chronicles 36:13
He also rebelled against king Nebuchadnezzar, who had made him swear by God: but he stiffened his neck, and hardened his heart against turning to Yahweh, the God of Israel.
Ecclesiastes 8:11
Because sentence against an evil work is not executed speedily, therefore the heart of the sons of men is fully set in them to do evil.
Romans 2:4-5
Or do you despise the riches of his goodness, forbearance, and patience, not knowing that the goodness of God leads you to repentance?