'Heart' in the Bible

It will happen at that time, that I will search Jerusalem with lamps, and I will punish the men who are settled on their dregs, who say in their heart, "Yahweh will not do good, neither will he do evil."

This is the joyous city that lived carelessly, that said in her heart, "I am, and there is none besides me." How she has become a desolation, a place for animals to lie down in! Everyone who passes by her will hiss, and shake their fists.

Sing, daughter of Zion! Shout, Israel! Be glad and rejoice with all your heart, daughter of Jerusalem.