Against paganism Christianity was armed with moral forces not a whit less great. Confronting mythological traditions and poetical or philosophical allegories, appeared a religion truly religious, concerned solely with the relations of mankind to God and with their eternal future. To the pagan indifference of the Roman world the Christians opposed the profound conviction of their faith, and not only their firmness in defending it against all powers and all dangers, but also their ardent passion for propagating it without any motive but the yearning to make their fellows share in its benefits and its hopes. They confronted, nay, they welcomed martyrdom, at one time to maintain their own Christianity, at another to make others Christians around them; propagandism was for them a duty almost as imperative as fidelity.
And it was not in memory of old and obsolete mythologies, but in the name of recent deeds and persons, in obedience to laws proceeding from God, One and Universal, in fulfilment and continuation of a contemporary and superhuman history--that of Jesus Christ, the Son of God and Son of Man--that the Christians of the first two centuries labored to convert to their faith the whole Roman world. Marcus Aurelius was contemptuously astonished at what he called the obstinacy of the Christians; he knew not from what source these nameless heroes drew a strength superior to his own, though he was at the same time emperor and sage. It is impossible to assign with exactness the date of the first footprints and first labors of Christianity in Gaul. It was not, however, from Italy, nor in the Latin tongue and through Latin writers, but from the East and through the Greeks, that it first came and began to spread. Marseilles and the different Greek colonies, originally from Asia Minor and settled upon the shores of the Mediterranean or along the Rhone, mark the route and were the places whither the first Christian missionaries carried their teaching: on this point the letters of the apostles and the writings of the first two generations of their disciples are clear and abiding proof.
In the West of the empire, especially in Italy, the Christians at their first appearance were confounded with the Jews, and comprehended under the same name. "The emperor Claudius," says Suetonius, "drove from Rome (A.D. 52) the Jews who, at the instigation of Christus, were in continual commotion." After the destruction of Jerusalem by Titus (A.D. 70), the Jews, Christian or not, dispersed throughout the empire; but the Christians were not slow to signalize themselves by their religious fervor, and to come forward everywhere under their own true name.