'Heart' in the Bible

And they observed the Feast of Unleavened Bread seven days with joy, for the Lord had caused them to rejoice, and had turned the heart of the king of Assyria toward them to encourage them in the work of the house of God, the God of Israel.

For Ezra had set his heart to study the law of the Lord and to practice it, and to teach His statutes and ordinances in Israel.

Blessed be the Lord, the God of our fathers, who has put such a thing as this in the king’s heart, to adorn the house of the Lord which is in Jerusalem,