These facts must be fully understood by the student of Mystic Christianity who wishes to grasp the secret of the early Christian Church after the death of Christ. The wonderful headway manifested by the movement could not have been given by mere followers and believers in the Master. It usually follows that when the great head of an organization dies the movement disintegrates or loses power unless he has been able to "communicate his spirit" to some chosen followers. And this Jesus did. And it was only to men who thoroughly grasped the fundamental truths and principles of His teachings that such "spirit" could have been imparted. There was an exoteric teaching for the multitude, and an esoteric teaching for the Twelve. There are many Scriptural passages which go to show this fact, which was well known to the early Fathers of the Church. And upon the occasion which we have mentioned the last great Basic Truths were explained to the Twelve, and from that time henceforward they were regarded and treated as Masters by Jesus, and not as mere students, as had been the case before that time. And arising from that final instruction came the Sermon of the Mount. The Sermon of the Mount, that most wonderful and complete of any of the public utterances of Jesus, was delivered almost immediately after the Choosing of the Twelve Apostles. And it was intended even more for them than for the multitudes gathered around to hear His preaching. He knew that the Twelve could interpret it by reason of the Inner Teachings that they had received from Him. And almost forgetting the congregation gathered around and about Him, He elucidated the Inner teachings for the benefit of the Chosen Few. The Sermon of the Mount can be understood only by means of the Master Key of the Inner Teachings, which opens the door of the mind to an understanding of the hard sayings and veiled mystic import of many of His precepts. We shall devote considerable space in one of our later lessons of this series to a consideration of the Inner Meaning of this great sermon and teaching, and therefore shall not go into details regarding it in the present lesson, deeming it better to proceed with the story of the Master's Work. A few days after the delivery of the Sermon of the Mount, the Master left Capernaum and traveled from town to town visiting His various centers of teaching, as was His custom. On the journey Jesus performed a feat of occult power that proved Him to be one of the Highest Adepts of the Occult Brotherhoods, for to none other would such a manifestation have been possible. Even some of the highest Oriental Masters would have refused to undertake the task that He set before Himself to do.