The Reappearance of the Christ by Alice Bailey

"In every age I come back to deliver the holy, to destroy the sin of the sinner, to establish righteousness." So runs the well-known passage in the Bhagavad Gita (translation by Prabhavananda and Isherwood), giving words to an eternal hope in the human heart.  In this book the reappearance of the Christ is recognised as inevitable within the continuity of divine revelation.  Not only has God never left Himself without witness, but at definite periods in the history of human evolution, the "word of God", the projected potency of His vital life, has manifested in form in order to establish the principles to be demonstrated during the coming cycle.  There have been many such messengers over the ages, manifesting through one or another of the great world religions or followed by a new form of religion based on the new revelation.  Divine revelation and the periodic appearance of messengers, or Avatars, occur, however, according to cosmic law, when certain conditions exist within the whole