Exodus 9:7
And Pharaoh sent, and behold, there was not one of the cattle of the Israelites dead. But the heart of Pharaoh was hardened, and he did not let the people go.
Exodus 7:14
And Jehovah said to Moses, Pharaoh's heart is hardened: he refuseth to let the people go.
Exodus 8:32
And Pharaoh hardened his heart this time also, and would not let the people go.
Exodus 9:12
And Jehovah made Pharaoh's heart stubborn, and he did not hearken to them, as Jehovah had told Moses.
Job 9:4
He is wise in heart and mighty in strength: who hath hardened himself against him, and had peace?
Proverbs 29:1
He that being often reproved hardeneth his neck, shall suddenly be destroyed, and without remedy.
Isaiah 48:4
Because I knew that thou art obstinate, and thy neck is an iron sinew, and thy brow brass,
Daniel 5:20
But when his heart was lifted up, and his spirit hardened unto presumption, he was deposed from the throne of his kingdom, and they took his glory from him;
Romans 9:18
So then, to whom he will he shews mercy, and whom he will he hardens.