'Harden' in the Bible
The Lord instructed Moses, “When you go back to Egypt, make sure you do all the wonders before Pharaoh that I have put within your power. But I will harden his heart so that he won’t let the people go.
But I will harden Pharaoh’s heart and multiply My signs and wonders in the land of Egypt.
I will harden Pharaoh’s heart so that he will pursue them. Then I will receive glory by means of Pharaoh and all his army, and the Egyptians will know that I am Yahweh.” So the Israelites did this.
I am going to harden the hearts of the Egyptians so that they will go in after them, and I will receive glory by means of Pharaoh, all his army, and his chariots and horsemen.
For it was the Lord’s intention to harden their hearts, so that they would engage Israel in battle, be completely destroyed without mercy, and be annihilated, just as the Lord had commanded Moses.
Why harden your hearts as the Egyptians and Pharaoh hardened theirs? When He afflicted them, didn’t they send Israel away, and Israel left?
Do not harden your hearts as at Meribah,as on that day at Massah in the wilderness
Why, Yahweh, do You make us stray from Your ways?You harden our hearts so we do not fear You.Return, because of Your servants,the tribes of Your heritage.
do not harden your hearts as in the rebellion,on the day of testing in the wilderness,
As it is said:Today, if you hear His voice,do not harden your hearts as in the rebellion.
again, He specifies a certain day—today—speaking through David after such a long time, as previously stated:Today, if you hear His voice,do not harden your hearts.