The sermon centers on the unwavering confidence of the Apostle Paul in his final days, grounded not in personal strength or circumstances, but in a deep, personal knowledge of Christ. True assurance comes from knowing whom one has believed—Christ as a faithful, powerful, and loving Savior who is able to guard the believer's soul until the day of His return. The message calls believers to cultivate a growing, experiential relationship with Christ through Scripture, prayer, and personal communion, so that they may walk with the same triumphant assurance, free from fear and trembling, knowing that their salvation is secured not by their own keeping, but by Christ's faithful preservation of all who have entrusted themselves to Him.