The sermon centers on the healing of the leper in Matthew 8:3, using the event to highlight the authority, compassion, and divine power of Jesus Christ. It emphasizes that true spiritual transformation begins with a humble, faith-filled cry to Christ, even when one's faith is weak and one's condition is abhorrent to the law. Jesus' immediate cleansing of the leper—through a simple will, not ritual or human effort—demonstrates His divine authority to forgive sin and restore the broken, fulfilling the law rather than abolishing it. The command to present himself to the priest and offer the prescribed sacrifice serves as a testimony to the law's inability to cleanse, yet its ultimate affirmation of Christ's redemptive work. The sermon calls the church to return to the authoritative preaching of Christ's gospel, rejecting worldly relevance in favor of faithful proclamation, so that sinners may be drawn to Him, cleansed by His grace, and declared righteous before both God and the law.