'Hearts' in the Bible

And it was so, when the days of their feasting were gone about, that Job sent and sanctified them, and rose up early in the morning, and offered burnt offerings according to the number of them all: for Job said, It may be that my sons have sinned, and cursed God in their hearts. Thus did Job continually.

“Will they (the fathers) not teach you and tell you,And utter words from their hearts [the deepest part of their nature]?

Will not his glory put you in fear, so that your hearts will be overcome before him?

"Because you're the one who closed their hearts to compassion; therefore, you won't let them triumph.

For God makes low those whose hearts are lifted up, but he is a saviour to the poor in spirit.

After I had said what was in my mind, they were quiet and let my words go deep into their hearts;

Their ear is open to his teaching, and he gives them orders so that their hearts may be turned from evil.

Those who have no fear of God keep wrath stored up in their hearts; they give no cry for help when they are made prisoners.