When Paul comes to town

"...when Paul comes into a town and declares that Jesus is Lord, no doubt explaining who Jesus was, the fact and significance of his death and resurrection, and so on, then the Spirit is at work, mysteriously, in the hearts and minds of the listeners, so that, when some of them believe in Jesus, Paul knows that this is not because of his eloquence or clever argument but because the announcement of Jesus as Lord functions as (in later technical language) the means of grace, the vehicle of the Spirit. And, since the gospel is the heraldic proclamation of Jesus as Lord, it is not first and foremost a suggestion that one might like to enjoy a new religious experience. Nor is it even the take-it-or-leave-it offer of a way to salvation. It is a royal summons to submission, to obedience, to allegiance; and the form that this submission and obedient allegiance takes is of course faith. That is what Paul means by ‘the obedience of faith’."