In this sermon, David Wilkerson emphasizes the importance of understanding and experiencing the fullness of God's love. He challenges Christians to move beyond a superficial understanding of God's love and to immerse themselves fully in its depth and breadth, fostering a deep, personal relationship with God that empowers them to live out their faith authentically and powerfully. When we grasp the greatness of God's love, it equips us to overcome sin and selflessly lay down our lives in love and service to God and others, just as Christ sacrificed Himself for us.