Exodus 9:7
Pharaoh sent representatives to investigate, and indeed, not even one of the livestock of Israel had died. But Pharaoh's heart remained hard, and he did not release the people.
Exodus 7:14
The Lord said to Moses, "Pharaoh's heart is hard; he refuses to release the people.
Exodus 8:32
But Pharaoh hardened his heart this time also and did not release the people.
Exodus 9:12
But the Lord hardened Pharaoh's heart, and he did not listen to them, just as the Lord had predicted to Moses.
Job 9:4
He is wise in heart and mighty in strength -- who has resisted him and remained safe?
Proverbs 29:1
The one who stiffens his neck after numerous rebukes will suddenly be destroyed without remedy.
Isaiah 48:4
I did this because I know how stubborn you are. Your neck muscles are like iron and your forehead like bronze.
Daniel 5:20
And when his mind became arrogant and his spirit filled with pride, he was deposed from his royal throne and his honor was removed from him.
Romans 9:18
So then, God has mercy on whom he chooses to have mercy, and he hardens whom he chooses to harden.