Exodus 9:7
Then Pharaoh sent, and, behold, there was not one of the livestock of the sons of Israel dead. But the heart of Pharaoh hardened, and he did not let the people go.
Exodus 7:14
Then the LORD said unto Moses, Pharaoh's heart is become grievous, for he refuses to let the people go.
Exodus 8:32
And Pharaoh even hardened his heart this time and did not let the people go.
Exodus 9:12
And the LORD hardened the heart of Pharaoh, and he did hearken unto them as the LORD had spoken unto Moses.
Job 9:4
He is wise in heart and mighty in strength; who has hardened himself against him and remained in peace?
Proverbs 29:1
He that being often reproved hardens his neck shall suddenly be destroyed and that without remedy.
Isaiah 48:4
Because I know that thou art obstinate, and thy neck is an iron sinew, and thy brow bronze;
Daniel 5:20
But when his heart made itself arrogant, and his spirit hardened itself in pride, he was deposed from the throne of his kingdom, and they took his glory from him:
Romans 9:18
Therefore he has mercy on whom he will have mercy, and he hardens whom he will.