'Heart' in the Bible

What is man, that thou makest much of him? and that thou settest thy 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 had peace?

And these things didst thou hide in thy heart; I know that this was with thee.

If thou prepare thy heart and stretch out thy hands toward him,

Why doth thy heart carry thee away? and why do thine eyes wink?

For thou hast hidden their heart from understanding; therefore thou wilt not exalt them.

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

Receive, I pray thee, instruction from his mouth, and lay up his words in thy heart.

Neither have I gone back from the commandment of his lips; I have laid up the words of his mouth more than the purpose of my own heart.

For God hath made my heart soft, and the Almighty troubleth me;

My righteousness I hold fast, and will not let it go: my heart reproacheth me not one of my days.

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

If my step have turned out of the way, and my heart followed mine eyes, and if any blot cleaveth to my hands;

If my heart have been enticed unto a woman, so that I laid wait at my neighbour's door,

And my heart have been secretly enticed, so that my mouth kissed my hand:

My words shall be of the uprightness of my heart, and my lips shall utter knowledge purely.

But the godless in heart heap up anger; they cry not when he bindeth them:

Aye, my heart trembleth at this also, and leapeth up out of its place:

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

His heart is firm as a stone, yea, firm as the nether millstone.