This sermon expounds on the Reformation doctrine of sola fide, asserting that sinners are justified by faith in Christ alone rather than by works. The preacher defines saving faith as a tripartite act involving knowledge of gospel facts, intellectual assent to their truth, and personal trust in Jesus for salvation. Using the illustration of a straw delivering a cold drink, the text clarifies that faith is merely the instrument that receives Christ, who is the sole source of righteousness. The message warns against relying on any human merit or religious ritual, emphasizing that justification is entirely a gift of God's grace received through resting in Jesus alone. Ultimately, the sermon calls listeners to examine their trust, ensuring it rests exclusively on the finished work of Christ for eternal life.