“What struck the early observers of Christianity most forcibly was not merely that salvation was offered by means of the Christian gospel, but that all other means were resolutely rejected. The early Christian missionaries demanded an absolutely exclusive devotion to Christ. Such exclusiveness ran directly counter to the prevailing syncretism of the Hellenistic age. In that day, many saviours were offered by many religions to the attention of men, but the various pagan religions could live together in perfect harmony; when a man became a devotee of one god, he did not have to give up the others. But Christianity would have nothing to do with these “courtly polygamies of the soul”; it demanded an absolutely exclusive devotion; all other Saviours, it insisted, must be deserted for the one Lord. Salvation, in other words, was not merely through Christ, but it was only through Christ. In that little word “only” lay all the offence. Without that word there would have been no persecutions; the cultured men of the day would probably have been willing to give Jesus a place, and an honorable place, among the saviours of mankind.” (Machen, Christianity & Liberalism, 123.)