John Nelson Darby emphasizes the significance of understanding the titles of God and Christ, particularly 'Father' and 'Lord,' which reflect our relationship as children and servants. He explains that Christ, as the Creator and established Heir, will ultimately take possession of all things after redemption, binding Satan and removing evil. Darby highlights the importance of recognizing our current position as raised with Christ, yet still awaiting our full inheritance in glory. He encourages believers to walk worthy of the Lord, filled with the knowledge of His will, and to rely on His power for endurance and joy. The sermon concludes with a reminder of God's faithfulness in keeping us secure in our salvation.