A third purpose is related to the questions that naturally arose among the Jewish and the Gentile Christians at Rome like what does the gospel do to the Law and such Old Testament rites like circumcision? In this the apostle shows how God saves the sinner.
In these verses, the great themes of the epistle are gathered together—the gospel, the power of God, salvation, everyone, who believes, righteousness from God, Jew and Gentile.
Paul could easily say, “I am become all things to all men, that I may by all means save some” (1 Cor. Having energetically and consistently persecuted the church of Jesus Christ, while on the road to Damascus, Paul had an encounter with the glorified resurrected Christ, which had revolutionary effects on his life. Thus, in the synagogues of Damascus, he proclaimed Christ as Savior. While the experience was sudden and dramatic, the effects were enduring.He was not only a Jew, but by his own testimony, he was a Pharisee and a son of a Pharisee (Acts 23:6), was a Hebrew of Hebrews (spoke Hebrew or Aramaic), was of the tribe of Benjamin (Phil.3:4-5), and had evidently been taught the trade of tent-making as a youth (Acts 18:3).The letter contains a number of historical references that agree with known facts of Paul’s life and the doctrinal content of the book is consistent with the other writings of the apostle, a fact quickly evident by a comparison with his other letters.A few examples must suffice: the doctrine of justification by faith (Rom -22; Gal ); the church as the body of Christ appointed to represent and serve him through a variety of spiritual gifts (Rom 12; 1 Cor 12); the collection for the poor saints at Jerusalem (Rom -28; 2 Cor 8-9).