Paul's motive for writing to his Roman readers
14 I am obligated both to Greeks and non-Greeks, both to the wise and the foolish. 15 That is why I am so eager to preach the gospel also to you who are at Rome.
We noted in the introduction to Romans that the Christian church (or churches) in Rome was a mixed group of Jews and Gentiles. Although a small number of Jews, well versed in the Old Testament Scriptures, might have provided much of the leadership, the majority of the Roman Christians was most likely of gentile background. Hence Paul can say that he is looking forward to having a gospel “harvest” among them just as he had among the other Gentiles.
Paul, however, did not feel restricted in the scope of his ministry. Although primarily a missionary to the Gentiles, Paul never hesitated to go first to the Jewish synagogue when he came to a new mission field. Paul alludes to the broad scope of ministry when he says, “I am obligated both to Greeks and non-Greeks, both to the wise and the foolish. That is why I am so eager to preach the gospel also to you who are at Rome."