Rom. 1:16 For I am not ashamed of the gospel; it is the power of God for salvation to everyone who has faith, to the Jew first and also to the Greek.
Paul is telling the great Romans that he is not ashamed of the gospel — the good news about Jesus Christ. Chryostom tells us this about the Romans:
“The Romans were most anxious about the things of the world, because of their riches, their empire, their victories, and they thought that their emperors were equal to the gods. . . . While they were so puffed up, Paul was going to preach Jesus, the carpenter’s son who was brought up in Judea, in the house of a lower-class woman, who had no bodyguards, who was not surrounded by wealth, but who died as a criminal among thieves and endured many other inglorious afflictions. Since it was likely that the Romans were pretending that they did not know any of these unspeakable things, Paul understates that he is not ashamed, in order to teach them not to be ashamed of Christ …