David Wilkerson emphasizes the importance of being rooted and grounded in God's love, urging believers to truly understand and experience the depth of Christ's love for them. He highlights that many Christians may know about God's love intellectually but have not fully grasped its transformative power in their hearts. Wilkerson encourages believers to build their lives on the foundation of God's love, which is essential for a fulfilling Christian walk. He calls for the Holy Spirit's help in comprehending this profound truth, enabling believers to live in the fullness of God's love.