On the fifth Ray of Concrete Knowledge or Science, we find the Master Hilarion, who, in an earlier incarnation was Paul of Tarsus. He is occupying a Cretan body, but spends a large part of His time in Egypt. He it was Who gave out to the world that occult treatise "Light on the Path," and His work is particularly interesting to the general public at this crisis, for He works with those who are developing the intuition, and controls and transmutes the great movements that tend to strip the veil from the unseen. His is the energy which, through His disciples, is stimulating the Psychical Research groups everywhere, and He it was Who initiated, through various pupils of His, the Spiritualistic movement. He has under observation all those who are psychics of the higher order, and assists in developing their powers for the good of the group, and in connection with certain of the devas of the astral plane He works to open up to the seekers after truth that subjective world which lies behind the grossly material.
"Initiation, human and Solar" By Alise A. Bailey (Tibetan)