That Christianity, as to-day presented by the orthodox, is far different from the Christianity promulgated by the early fathers, few are so blinded as to doubt. Christianity, like all other religions, came not into the world fullgrown, but from the simple conceptions of its early followers became gradually elaborated by the introduction of pagan forms and customs until it supplanted its early rivals and gave its adherents a compact and solid theology not ver y different from that of its predecessors. However, before considering the genealogy of Christianity, or its heirlooms from paganism, let us turn our attention to what were presumably the beginnings of the religious views of mankind.