'Heart' in the Bible

And it shall come to pass at that time, that I will search Jerusalem with lamps, and punish the men that are settled on their lees, that say in their heart, Jehovah will not do good, neither will he do evil.

This is the rejoicing city that dwelt in security, that said in her heart, I am, and there is none else beside me: how is she become a desolation, a couching-place for beasts! Every one that passeth by her shall hiss, shall wave his hand.

Exult, O daughter of Zion; shout, O Israel; rejoice and be glad with all the heart, O daughter of Jerusalem: