Derived from the Sanskrit word Dvija (द्विजा), literally "twice-born."
Exoterically, in common usage it refers to three of the four castes in Indian society, or is used by various religions to denote those who "believe" in their dogma. Sadly, the term "Twice-born" has been twisted into a multiplicity of justifications for the crimes of humanity, such as caste discrimination, racial hatred, religious dogmas and fanaticisms, etc. But the real meaning has never been known by the public.
Jesus: “Verily, verily, I say unto thee, except a man be born again, he cannot see the kingdom of God.” —John 3
Esoterically, a Twice-born person is someone who has created the soul, and is therefore a solar human being, as opposed to the more common lunar intellectual animal.
"Hindu Brahmins symbolize the Second Birth sexually. In their liturgy, a large golden cow is constructed and the candidate for the Second Birth has to pass through the hollow body of the cow three times, by dragging himself, exiting through the vulva, and thus he becomes consecrated as a true Brahman-Dvija, or Twice-born: once of his mother and second by the cow. It is in this manner that the Brahmins symbolically explain the Second Birth taught by Jesus to Nicodemus... The Brahmins are not Twice-born, but symbolically they are. The Master Mason is not truly a Master, but symbolically he is. The interesting thing is to reach the Second Birth, and this problem is one hundred percent sexual." - Samael Aun Weor, Practical Astrology
"The solar race, the Twice-born, have solar bodies. Yet ordinary people, humanity in general, belong to a lunar race and only have lunar bodies (bodies of a lunar type)."- Samael Aun Weor, Practical Astrology
"Once the body of conscious will [causal body, Tiphereth] is built, one becomes a Twice-born." - Samael Aun Weor, Tarot and Kabbalah