'Heart' in the Bible

What is man, that thou shouldest magnify him? and that thou shouldest set thine heart upon him?

Shall not they teach thee, and tell thee, and utter words out of their heart?

He is wise in heart, and mighty in strength: who hath hardened himself against him, and hath prospered?

And these things hast thou hid in thine heart: I know that this is with thee.

If thou prepare thine heart, and stretch out thine hands toward him;

He taketh away the heart of the chief of the people of the earth, and causeth them to wander in a wilderness where there is no way.

Why doth thine heart carry thee away? and what do thy eyes wink at,

For thou hast hid their heart from understanding: therefore shalt thou not exalt them.

My days are past, my purposes are broken off, even the thoughts of my heart.

Receive, I pray thee, the law from his mouth, and lay up his words in thine heart.

For God maketh my heart soft, and the Almighty troubleth me:

My righteousness I hold fast, and will not let it go: my heart shall not reproach me so long as I live.

The blessing of him that was ready to perish came upon me: and I caused the widow's heart to sing for joy.

If my step hath turned out of the way, and mine heart walked after mine eyes, and if any blot hath cleaved to mine hands;

If mine heart have been deceived by a woman, or if I have laid wait at my neighbour's door;

And my heart hath been secretly enticed, or my mouth hath kissed my hand:

My words shall be of the uprightness of my heart: and my lips shall utter knowledge clearly.

If he set his heart upon man, if he gather unto himself his spirit and his breath;

But the hypocrites in heart heap up wrath: they cry not when he bindeth them.

At this also my heart trembleth, and is moved out of his place.

Men do therefore fear him: he respecteth not any that are wise of heart.

Who hath put wisdom in the inward parts? or who hath given understanding to the heart?

His heart is as firm as a stone; yea, as hard as a piece of the nether millstone.