David Wilkerson emphasizes the call to Christlikeness through the example of the prophet Jeremiah, who engaged his heart to seek the Lord and shared in God's burden of weeping for His people. Despite being known as the weeping prophet, Jeremiah also delivered messages of hope and glory, revealing the depth of his brokenness and the divine compassion he experienced. Wilkerson highlights that when we share in God's sorrow, we gain insight into His thoughts and the state of our times, ultimately leading us to a deeper understanding of Christ's heart. This connection allows believers to experience both the joy and pain of God's eternal heart, reflecting the essence of Christ in their lives.