'Hearts' in the Bible

Have glory in his holy name; let the hearts of those who are searching after the Lord be glad.

Let your search be for the Lord and for his strength; let your hearts ever be turned to him.

And you, Solomon my son, get knowledge of the God of your father, and be his servant with a true heart and with a strong desire, for the Lord is the searcher of all hearts, and has knowledge of all the designs of men's thoughts; if you make search for him, he will be near you; but if you are turned away from him, he will give you up for ever.

And I am conscious, my God, that you are the searcher of hearts, taking pleasure in righteousness. As for me, with an upright heart I have freely given all these things; and I have seen with joy your people who are here to make their offerings freely to you.

O Lord, the God of Abraham, of Isaac, and of Israel, our fathers, keep this for ever in the deepest thoughts of your people, and let their hearts be fixed and true to you;