John Nelson Darby emphasizes that the character of the ministry of the gospel requires that one must first possess the truth of the gospel in their own heart before sharing it with others. He explains that the glory of God is revealed in the face of Jesus Christ, who has accomplished the work of salvation, allowing believers to see and reflect that glory. Darby contrasts the ministry of the New Testament with that of the Old Testament, highlighting the transformative power of the Holy Spirit in the believer's life. He encourages Christians to remain vigilant and prepared for Christ's return, emphasizing the importance of being filled with the knowledge of God's glory and living in a way that reflects that light. Ultimately, he calls for believers to recognize their identity in Christ and the hope of eternal glory that awaits them.