'Hardness of Heart' in the Bible

And all the people shall know, Ephraim and the people of Samaria, who say in pride and hardness of heart,

Thou wilt give them hardness of heart, thy curse unto them.

He saith unto them, Moses for your hardness of heart suffered you to put away your wives: but from the beginning it hath not been so.

After looking around at them with anger, grieved at their hardness of heart, He *said to the man, “Stretch out your hand.” And he stretched it out, and his hand was restored.

But Jesus said unto them, For your hardness of heart he wrote you this commandment.

Afterward he appeared unto the eleven as they sat at meat, and upbraided them with their unbelief and hardness of heart, because they believed not them which had seen him after he was risen.

for their [moral] understanding is darkened and their reasoning is clouded; [they are] alienated and self-banished from the life of God [with no share in it; this is] because of the [willful] ignorance and spiritual blindness that is [deep-seated] within them, because of the hardness and insensitivity of their heart.