Romans is the apostle Paul's theological masterpiece, a systematic exposition of the gospel of Jesus Christ. Written to the church in Rome before his planned visit, this epistle presents the doctrine of justification by faith, explaining how both Jews and Gentiles can be saved by God's grace through faith in Christ. Paul demonstrates the universality of sin, God's provision for salvation, and the practical implications of living as a Christian. It is considered the most complete statement of Christian doctrine in the New Testament.