This sermon explores the concept of purpose in a Christian's life, emphasizing that our ultimate purpose is to be disciples of Christ. The speaker argues that being a disciple is inseparable from being a Christian and that the primary marker of discipleship is love. This love is not just human kindness, but a selfless, sacrificial love that mirrors Christ's love for us. The sermon challenges listeners to develop a deeper relationship with God, experience His love, and then share that love with others as a way of fulfilling their purpose and making disciples.