“No orthodox Brahmans and Buddhists would deny the Christian incarnation; only, they understand it in their own philosophical way, and how could they deny it? The very cornerstone of their religious system is periodical incarnations of the Deity. Whenever humanity is about merging into materialism and moral degradation, a Supreme Spirit incarnates himself in his creature selected for the purpose. The “Messenger of the Highest” links itself with the duality of matter and soul, and the triad being thus completed by the union of its Crown, a saviour is born, who helps restore humanity to the path of truth and virtue.
The early Christian Church, all imbued with Asiatic philosophy, evidently shared the same belief, otherwise it would have neither erected into an article of faith the second advent, nor cunningly invented the fable of Anti-Christ as a precaution against possible future incarnations. Neither could they have imagined that Melchizedeck was an avatar of Christ. They had only to turn to the Bhagavad-Gita to find Christna of Bhagaved saying to Arjuna: “He who follows me is saved by wisdom and even by works. …As often as virtue declines in the world, I make myself manifest to save it.”
Indeed, it is more than difficult to avoid sharing this doctrine of periodical incarnations. Has not the world witnessed, at rare intervals, the advent of such grand characters as Christna, Sakya-muni, and Jesus? Like the two latter personages, Christna seems to have been a real being, deified by his school at some time in the twilight of history, and made to fit into the frame of the time-honored religious programme.
Compare the two Redeemers, the Hindu and the Christian, the one preceding the other by some thousands of years; place between them Siddhartha Buddha, reflecting Christna and projecting into the night of the future his own luminous shadow, out of whose collected rays were shaped the outlines of the mythical Jesus, and from whose teachings were drawn those of the historical Christos; and we find that under one identical garment of poetical legend lived and breathed three real human figures. The individual merit of each of them is rather brought out in stronger relief than otherwise by this same mythical coloring; for no unworthy character could have been selected for deification by the popular instinct, so unerring and just when left untrammeled. Vox populi vox Dei, was once true, however erroneous when applied to the present priest-ridden mob.”
H. P. Blavatsky
The Mark Of God: Understanding Your "I AM Presence" 