Paul’s introductory comments in Romans are typical. In them he identifies himself as a bondservant of the Lord, engaged in the task of preaching His gospel.
He affirms his apostleship, and that the gospel had its inception in the prophets. (Remember, Philip preached Jesus to the Ethiopian using the text of Isaiah 53).
He affirms Jesus to be the Son of Man “born of the seed of David according to the flesh”, and to be the Son of God, attested “by the resurrection from the dead.”
It is amazing how often the apostle repeats those two facts throughout his writings: 1) I am an apostle by God’s choosing; 2) I am bound by God to preach the gospel of the Lord.
Paul also revealed something about the Roman Christians. He wrote, “among whom you also are the called of Jesus Christ.” This calling is the process of sanctification. We are called out of the world, called to holiness. All of Paul’s instructions come from this fact concerning his brethren. “Shall we continue in sin that grace may abound? Certainly not! How shall we who died to sin live any longer in it?” (6:2-3).