A lesson on the way that the Gospel redirects our life in Christ, transforming us from sinners into saints who desire above all to obey and glorify God in Christ Jesus. The sermon centers on the divine origin and unchangeable nature of the gospel, as defended by Paul in Galatians 1:11–24, emphasizing that the gospel is not a human invention but a revelation from Jesus Christ, authenticated by Paul's radical transformation from persecutor to apostle. It contrasts the true gospel—rooted in God's sovereign grace and received through divine revelation—with man-made religions and cults that distort salvation by adding human works, thereby undermining the sufficiency of Christ's atonement. Paul's testimony, from his zealous persecution of the church to his Damascus Road encounter and subsequent three-year preparation in Arabia, illustrates how genuine faith results in a complete inward transformation that inevitably produces outward obedience and a life devoted to glorifying God. The sermon underscores that salvation is entirely God's work—from election before creation to final glorification—highlighting the believer's identity not in past failures but in Christ's righteousness, and calls both unbelievers and believers to rest wholly in the gospel's power to redeem and transform.