'Hearts' in the Bible

"LORD God of Israel, there is no one like you, God of heaven and earth, who watches over his covenant, showing gracious love to your servants who live their lives in your presence with all their hearts. It is you, LORD God, who has kept your promise to my father, your servant David, that you made to him. Indeed, you made a commitment to my father David and then personally fulfilled what you had promised today.

then hear from heaven, the place where you reside, and forgive, repaying each person according to all of his ways, since you know their hearts for you alone know the hearts of human beings

if they turn their hearts back to you in the land where they have been taken captive, repent, and pray to you even if they do so in the land where they have been taken captive confessing, "We have sinned, we have committed abominations, and practiced wickedness,'

The LORD's eyes keep on roaming throughout the earth, looking for those whose hearts completely belong to him, so that he may strongly support them. But because you have acted foolishly in this, from now on you will have wars."

However, the high places were not removed, since the people had not yet directed their hearts to the God of their ancestors.