Baptism: a Seal of Ingrafting into Christ [2026.05.10 Sabbath School lesson in WCF 28.1.d—Theology Simply Explained]

Baptism is a sacrament of the New Testament, ordained by Jesus Christ,(a) not only for the solemn admission of the party baptized into the visible Church,(b) but also to be unto him a sign and seal of the covenant of grace,(c) of his ingrafting into Christ,(d) of regeneration,(e) of remission of sins,(f) and of his giving up unto God, through Jesus Christ, to walk in newness of life:(g) which sacrament is, by Christ’s own appointment, to be continued in his Church until the end of the world.(h) (click here to DOWNLOAD mp3/pdf files of this lesson) Summary of the transcript of the audio: The lesson centers on baptism as a sacred sign and seal of union with Christ, emphasizing that true faith involves being spiritually engrafted into Christ, the true vine, where believers are no longer dead in sin but alive in Him. Drawing from Romans 6:3–5 and Galatians 3:27, it explains that baptism symbolizes not merely ritual washing but a profound spiritual reality: dying to sin and rising to new life in Christ, a union that secures all of Christ’s benefits and demands total allegiance. The preacher underscores that this union is not partial or conditional but comprehensive—believers receive the whole Christ, and Christ receives the whole believer, making continued sin incompatible with genuine faith. Through pastoral insight and biblical exegesis, the message confronts the dangerous logic of using grace as license for sin, instead calling for a life of obedience and sanctification rooted in the believer’s identity in Christ. Ultimately, baptism serves as a divine guarantee and a continual call to live as one who has been united to Christ, walking in newness of life and resting wholly in Him.