T. Austin-Sparks emphasizes the profound significance of 'the Lamb' in the final vision of Revelation, illustrating that the essence of God's purpose culminates in the 'government of love.' He explains that the new Jerusalem symbolizes a community characterized by love and divine governance, with the Lamb as its foundation and source of life. The sermon explores themes of cleansing love, the transformative power of suffering, and the necessity of experiencing Christ's love to truly serve others. Ultimately, Sparks highlights that the Lamb's presence is central to understanding God's relationship with humanity and the eternal value of love in service.