G. Campbell Morgan emphasizes the message of 2 Peter, focusing on the responsibilities that come with grace. He explains that believers are endowed with divine power and resources for life and godliness, which necessitate a diligent response to avoid spiritual perils. The sermon highlights the importance of remembrance and anticipation of Christ's coming, urging individuals and the church to live in a way that reflects their faith and readiness for His return. Morgan warns against the dangers of denying Christ and His second coming, which can lead to spiritual blindness and moral decay. Ultimately, he calls for a commitment to grow in grace and to actively cooperate with God's power in developing character.