In teaching, Jesus had two methods: one, exoteric, simple, for the world; the other, esoteric, mystic, for the initiate. “No attentive reader of the Bible,” says Bahrdt, “can fail to notice that Jesus made use of two different styles of speech. Sometimes He spoke so plainly and in such universally intelligible language, and declared truths so simple and so well adapted to the general comprehension of mankind that even the simplest could follow Him. At other times he spoke so mystically, so obscurely, and in so veiled a fashion that words and thoughts alike baffled the understandings of ordinary people, and even by more practised minds were not to be grasped without close reflection, so that we are told in John vi. 60 that ‘many of His disciples, when they heard this, said, This is an hard saying; who can hear it?’ And Jesus Himself did not deny it, but only told them that the reason of their not understanding His sayings lay in their prejudices, which made them interpret everything literally and materially, and overlook the ethical meaning which underlay His figurative language.” Most of these mystical discourses are to be found in John, who seems to have preserved for us the greater part of the secret teaching imparted to the initiate. The key to the understanding of this esoteric teaching is to be found, therefore, in the prologue to John’s Gospel, and in the sayings about the new birth. “To be born again” is identical with the degree of perfection which was attained in the highest class of the Brotherhood. The members of the Order met on appointed days in caves among the hills. When we are told in the Gospels that Jesus went alone into a mountain to pray, this means that He repaired to one of these secret gatherings, but the disciples, of course, knew nothing about that. The Order had its hidden caves everywhere; in Galilee as well as in the neighbourhood of Jerusalem.