'Heart' in the Bible

Then they observed the Festival of Unleavened Bread for seven days with joy, because the LORD had made them glad, turning the heart of the king of Assyria toward them and strengthening them for their work on the Temple of God, the God of Israel.

For Ezra had set his heart to seek the Law of the LORD, to obey it, and to teach God's statutes and judgments in Israel.

Blessed be the LORD God of our ancestors, who placed this decree into the king's heart to beautify the Temple of the LORD in Jerusalem