It is not to be supposed that any abnormal sagacity presided over the formation of either the creed and canon or the official system of the Church; but insofar as it survived it can be seen to have done so in virtue alike of assimilation and of refusal to assimilate. Much expansion was needed to make an area broad enough for the pagan populace; and on the side of custom and myth hardly any pagan element was ultimately refused. At the outset the great cause of strife between Christian and pagan was the contemptuous refusal of the former to show any respect for "idols"--a principle derived by Jewry from Persia, and passed on to the first Jesuists. When, however, the Christian cult became that of the State, it of necessity reverted, as we shall see, to the psychology of the multitude, and carried the use of images as far as pagans had ever done. Even the so-called "animal-worship" of the Egyptians partly survived in such usages as the presence of the sacred ox and ass in the mystery-play of the Nativity (an immemorial popular rite, belonging to sun-worship), in the adoption of the "four zoa" of the Apocalypse (old Oriental figures) as the symbols of the four evangelists, and in the conception of "the Lamb." Before the period of image-worship, too, the Church had fully accepted the compromise by which countless pagan "heroes" and "geniuses," the subjects of local cults, became enrolled as saints and martyrs, whose bones had given to tombs and wells and shrines a sacred virtue, and whose old festival-days became part of the new ecclesiastical calendar.
Above all, there was finally forced on the Church a cult of the Mother as Virgin Goddess, without which it could not have held its own against the great and well-managed worships of Isis and Rhea-Cybelê and Dêmêtêr; since the first and last in particular aroused in multitudes a rapture of exalted devotion such as was not psychologically possible towards even a crucified God, save insofar as the emotion of women worshippers towards the slain Demigod realized that of male devotees towards the Queen of Heaven and the Mother and sustainer of things. If the original Jesus of the myth had not had a mythical mother, it would have been necessary to invent one. Once established, her elevation to the honours of Isis was inevitable.