The sermon examines the Reformed theological doctrine of the certain application of redemption, arguing that Christ's death secures salvation for a specific elect people rather than merely making it possible. By analyzing John 6:37, the text highlights key doctrines such as election, effectual calling, and perseverance, emphasizing that the Holy Spirit enables the dead to respond to the gospel through regeneration. The discussion extends to the sacraments, distinguishing baptism as a passive sign and seal of the covenant from the Lord's Supper, which requires an active, credible profession of faith. The preacher warns against sacerdotal views that treat sacraments as magical, while affirming that grace is truly conferred by the Spirit to those who belong to Christ. The tone is instructional and pastoral, aiming to provide confidence in the certainty of salvation while encouraging worthy participation in church ordinances.