Chandra-vansa (Sk.) The “Lunar Race”, in contradistinction to Suryavansa, the “Solar Race”. Some Orientalists think it an inconsistency that Krishna, a Chandravansa (of the Yadu branch) should have been declared an Avatar of Vishnu, who is a manifestation of the solar energy in Rig -Veda, a work of unsurpassed authority with the Brahmans. This shows, however, the deep occult meaning of the Avatar ; a meaning which only esoteric philosophy can explain. A glossary is no fit place for such explanations; but it may be useful to remind those who know, and teach those who do not, that in Occultism, man is called a solar-lunar being, solar in his higher triad, and lunar in his quaternary. Moreover, it is the Sun who imparts his light to the Moon, in the same way as the human triad sheds its divine light on the mortal shell of sinful man. Life celestial quickens life terrestrial. Krishna stands metaphysically for the Ego made one with Atma-Buddhi, and performs mystically the same function as the Christos of the Gnostics, both being “the inner god in the temple”—man. Lucifer is “the bright morning star”, a well known symbol in Revelations, and, as a planet, corresponds to the EGO. Now Lucifer (or the planet Venus) is the Sukra-Usanas of the Hindus ; and Usanas is the Daitya-guru, i.e., the spiritual guide and instructor of the Danavas and the Daityas. The latter are the giant-demons in the Purânas, and in the esoteric interpretations, the antetypal symbol of the man of flesh, physical mankind. The Daityas can raise themselves, it is said, through knowledge “austerities and devotion” to “the rank of the gods and of the ABSOLUTE”. All this is very suggestive in the legend of Krishna ; and what is more suggestive still is that just as Krishna, the Avatar of a great God in India, is of time race of Yadu, so is another incarnation, “God incarnate himself”—or the “God-man Christ”, also of the race Iadoo—the name for the Jews all over Asia. Moreover, as his mother, who is represented as Queen of Heaven standing on the crescent, is identified in Gnostic philosophy, and also in the esoteric system, with the Moon herself, like all the other lunar goddesses such as Isis, Diana, Astarte and others—mothers of the Logoi, so Christ is called repeatedly in the Roman Catholic Church, the Sun-Christ, the Christ-Soleil and so on. If the later is a metaphor so also is the earlier.
Source: H.P.Blavatsky - The Theosophical Glossary