'Harden' in the Bible

The Lord said to Moses, “When you go back to Egypt see that you perform before Pharaoh all the wonders which I have put in your power; but I will harden his heart so that he will not let the people go.

But I will harden Pharaoh’s heart that I may multiply My signs and My wonders in the land of Egypt.

Thus I will harden Pharaoh’s heart, and he will chase after them; and I will be honored through Pharaoh and all his army, and the Egyptians will know that I am the Lord.” And they did so.

As for Me, behold, I will harden the hearts of the Egyptians so that they will go in after them; and I will be honored through Pharaoh and all his army, through his chariots and his horsemen.

“If there is a poor man with you, one of your brothers, in any of your towns in your land which the Lord your God is giving you, you shall not harden your heart, nor close your hand from your poor brother;

For it was of the Lord to harden their hearts, to meet Israel in battle in order that he might utterly destroy them, that they might receive no mercy, but that he might destroy them, just as the Lord had commanded Moses.

Why then do you harden your hearts as the Egyptians and Pharaoh hardened their hearts? When He had severely dealt with them, did they not allow the people to go, and they departed?

Do not harden your hearts, as at Meribah,As in the day of Massah in the wilderness,

Why, O Lord, do You cause us to stray from Your waysAnd harden our heart from fearing You?Return for the sake of Your servants, the tribes of Your heritage.