'Hearts' in the Bible

And there were certain of the scribes there sitting, and reasoning in their hearts,

And immediately Jesus, having known in his spirit that they thus reason in themselves, said to them, 'Why these things reason ye in your hearts?

and these are they by the way where the word is sown: and whenever they may hear, immediately cometh the Adversary, and he taketh away the word that hath been sown in their hearts.