In thus studying the thought of our time we see that the question of a hidden teaching in connection with Christianity becomes of vital importance. Is Christianity to survive as _the_ religion of the West? Is it to live through the centuries of the future, and to continue to play a part in moulding the thought of the evolving western races? If it is to live, it must regain the knowledge it has lost, and again have its mystic and its occult teachings; it must again stand forth as an authoritative teacher of spiritual verities, clothed with the only authority worth anything, the authority of knowledge. If these teachings be regained, their influence will soon be seen in wider and deeper views of truth; dogmas, which now seem like mere shells and fetters, shall again be seen to be partial presentments of fundamental realities. First, Esoteric Christianity will reappear in the "Holy Place," in the Temple, so that all who are capable of receiving it may follow its lines of published thought; and secondly, Occult Christianity will again descend into the Adytum, dwelling behind the Veil which guards the "Holy of Holies," into which only the Initiate may enter. Then again will occult teaching be within the reach of those who qualify themselves to receive it, according to the ancient rules, those who are willing in modern days to meet the ancient demands, made on all those who would fain know the reality and truth of spiritual things.
Once again we turn our eyes to history, to see whether Christianity was unique among religions in having no inner teaching, or whether it resembled all others in possessing this hidden treasure. Such a question is a matter of evidence, not of theory, and must be decided by the authority of the existing documents and not by the mere _ipse dixit_ of modern Christians.
As a matter of fact both the "New Testament" and the writings of the early Church make the same declarations as to the possession by the Church of such teachings, and we learn from these the fact of the existence of Mysteries--called the Mysteries of Jesus, or the Mystery of the Kingdom--the conditions imposed on candidates, something of the general nature of the teachings given, and other details. Certain passages in the "New Testament" would remain entirely obscure, if it were not for the light thrown on them by the definite statements of the Fathers and Bishops of the Church, but in that light they became clear and intelligible.