'Harden' in the Bible

And Jehovah said to Moses, When thou goest to return to Egypt, see that thou do all the wonders before Pharaoh that I have put in thy hand. And I will harden his heart, that he shall not let the people go.

And I will harden Pharaoh's heart, that he may pursue after them; and I will glorify myself in Pharaoh, and in all his host; and the Egyptians shall know that I am Jehovah. And they did so.

And I, behold, I will harden the hearts of the Egyptians, and they shall pursue after them; and I will glorify myself in Pharaoh and in all his host, in his chariots and in his horsemen.

If there be amongst you a poor man, any one of thy brethren in one of thy gates, in thy land which Jehovah thy God giveth thee, thou shalt not harden thy heart, nor shut thy hand from thy brother in need;

And why will ye harden your heart, as the Egyptians and Pharaoh hardened their heart? When he had wrought mightily among them, did they not let them go, and they departed?

Now, harden not your necks, as your fathers; yield yourselves to Jehovah, and come to his sanctuary, which he has sanctified for ever; and serve Jehovah your God, that the fierceness of his anger may turn away from you.

Harden not your heart, as at Meribah, as in the day of Massah, in the wilderness;