Christians had to guard the newness of the message without isolating themselves from the culture or accommodating themselves to the culture, which required them to form people in the faith and thus grow a movement of genuine disciples who could survive, and even thrive, in such a world. Rome would have ignored Christianity if Christians had been too isolated; it would have absorbed it if they had become too accommodating. For the most part it did neither.
Resilient Faith - Gerald L Sittser - Brazos Press, p.6