AI OVERVIEW: Lasting restoration begins within before it is seen without; God’s goal is to bring people back to him by renewing their hearts, not merely their land. The heart, or lev, is the center of a person’s inner life—the place where faith, thoughts, feelings, and decisions converge, and where God desires to dwell. Israel’s divided heart produced fruit in rebellion and exile, while Jeremiah’s purchase of a field shows a heart devoted to the Lord, obeying before understanding. God promises a new covenant—one heart and one way, with the fear of the Lord written on the heart and restoration from exile; call to me and I will answer you and tell you great and unsearchable things you do not know.