G. Campbell Morgan emphasizes the transformative power of the Cross in the life of believers, highlighting that while they experience pardon, purity, and peace through Christ, they also require ongoing power to navigate life's challenges. He explains that the Cross is not just a historical event but a source of strength for those who are being saved, enabling them to resist temptation, endure suffering, and fulfill their divine purpose. Morgan encourages believers to embrace their weaknesses, as it is in surrendering to Christ that they can access the true power of the Cross, which empowers them for service and living a victorious Christian life.