Peter Brandon emphasizes the significance of the believer's body before the judgment seat of Christ, highlighting the church's triumph over the devil's domain and the importance of building one's faith on the foundation of Jesus Christ. He explains that while the church will be taken into the air, the world will face tribulation, and believers will stand before Christ to have their works judged, not their sins. Brandon warns against the dangers of sectarianism and urges believers to ensure their church affiliations are based on scriptural principles rather than personal preferences or charismatic leaders. He reassures that believers will be judged in grace, and their works will be tested by fire, with only what is built on Christ enduring. The sermon calls for a return to biblical foundations in church life to avoid loss of reward.