Romans 1:15

So, as much as in me is, I am ready to preach the gospel to you also that are in Rome. [Paul's knowledge of the good news, and his apostleship as to it, laid upon him the sacred obligation to tell it to all who had not heard it (1 Corinthians 9:16-19). His commission as apostle to the Gentiles sent him to both Greeks and Barbarians, the two classes into which the Gentiles were divided; and left him no right to discriminate between tile cultured and the ignorant. Moved by a desire to pay this debt, he was ready, so far as the direction of his affairs lay in his own power of choice, to preach to the Romans, who held no mean place among the Gentiles.]