'Heart' in the Bible

Be not hard of heart, as when you made me angry, on the day of testing in the waste land,

My brothers, take care that there is not by chance in any one of you an evil heart without belief, turning away from the living God:

As it is said, Today if you will let his voice come to your ears, be not hard of heart, as when you made him angry.

After a long time, again naming a certain day, he says in David, Today (as he had said before), Today if you will let his voice come to your ears, be not hard of heart,

For the word of God is living and full of power, and is sharper than any two-edged sword, cutting through and making a division even of the soul and the spirit, the bones and the muscles, and quick to see the thoughts and purposes of the heart.

For this reason let us go on from the first things about Christ to full growth; not building again that on which it is based, that is, the turning of the heart from dead works, and faith in God,

So that you may not be slow in heart, but may take as your example those to whom God has given their heritage, because of their faith and their long waiting.

And this is an image of the present time; when the offerings which are given are not able to make the heart of the worshipper completely clean,

So that we say with a good heart, The Lord is my helper; I will have no fear: what is man able to do to me?