'Harden' in the Bible

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.

I will harden Pharaoh's heart, and multiply my signs and my wonders in the land of Egypt.

I will harden Pharaoh's heart, and he will follow after them; and I will get honor over Pharaoh, and over all his armies; and the Egyptians shall know that I am Yahweh." They did so.

I, behold, I will harden the hearts of the Egyptians, and they shall go in after them: and I will get myself honor over Pharaoh, and over all his armies, over his chariots, and over his horsemen.