The sermon centers on the unassailable biblical doctrine of Christ's deity, affirming that Jesus is fully God and truly man, a truth foundational to authentic Christianity. It systematically defends this claim through nine lines of argument: messianic prophecies in the Old Testament that point to a divine Savior, the application of the divine name Yahweh to Christ, the attribution of titles reserved exclusively for God to Jesus, His possession of divine attributes such as eternality, omnipresence, omniscience, and immutability, His performance of works only God can do—including creation, forgiveness of sins, resurrection, and final judgment, His acceptance of worship without rebuke, explicit biblical declarations that Jesus is God, His direct claims to deity such as 'I am' in John 8:58, and the imperative of faith in Christ as God for salvation. The preacher confronts Arianism and modern denials of Christ's divinity, particularly those of the Jehovah's Witnesses, exposing their theological and grammatical inconsistencies, and concludes with a solemn call to faith in Christ as the eternal, self-existent God, whose deity is not merely implied but clearly revealed throughout Scripture.