Exodus 9:34
And 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
And LORD said to Moses, Pharaoh's heart is stubborn; he refuses to let the people go.
Exodus 4:21
And LORD said to Moses, When thou go back into Egypt, see that thou do before Pharaoh all the wonders which I have put in thy 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 relief, he hardened his heart, and did not hearken to them, as LORD had spoken.
2 Chronicles 28:22
And in the time of his distress he trespassed yet more against LORD, this same king Ahaz.
2 Chronicles 33:23
And he did not humble himself before LORD, as Manasseh his father had humbled himself, but this same Amon trespassed more and more.
2 Chronicles 36:13
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 to LORD, 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 thou despise the wealth of his goodness and forbearance and longsuffering, not knowing that the goodness of God guides thee to repentance?