Samael Aun Weor, the bodhisattva of Samael, the Spirit of Fire, was born 6th of March 1917 in Colombia, South America. At a very early age, he was able to remember his past incarnations. Thus, he knew who he was.

Samael Aun Weor, the bodhisattva of Samael, the Spirit of Fire, was born 6th of March 1917 in Colombia, South America. At a very early age, he was able to remember his past incarnations. Thus, he knew who he was.
He never identified with his Christian name since he knew that it was just a passing accident of life that soon disappears in time. Even though many people who knew him still like to use his Christian name, we omit it, because just like him, we only want to talk about his Real Self or Real Being.
At the age of eighteen, he came in contact with his Innermost through a maha-Samadhi and met his Guru in the Internal Worlds.
After passing terrible Ordeals in the physical world he was initiated in a Gnostic Temple of the Superior Worlds. Through his initiation he remembered his reincarnations in Atlantis, Lemuria, Hyperborea, and the Polar Race. Reaching the state of Prajnaparamita he gained access to the cosmic Akashic Records (the memory of Nature) and thereafter went beyond the Polar Race, remembering past mahamanvantaras (Cosmic Days). This is how he came to know about the origin of the human being on this planet, a knowledge that he wrote in one of his books entitled Gnostic Anthropology.
He achieved the complete Annihilation within himself of the subconsciousness, unconsciousness, and Infraconsciousness through the techniques of Meditation and sexual dynamics; thus he developed Supraconsciousness, which gave him the ability to investigate cosmic phenomena within all of the sephiroth of the Tree of Life. He also became able to consciously communicate with all of the sentient beings who inhabit the different spheres or dimensions, parallel universes of the cosmos. This is how he was able to bring into his physical brain a great deal of wisdom in relation to esoterism, mantras, invocations, Kabbalah, esoteric Psychology, etc, etc, etc.
There were many times when he explained to his disciples the great difficulty he had in crystallizing into contemporary language, the wisdom that he received within the Internal Worlds. He needed to learn Sanskrit, Latin, Greek, and Hebrew in order to explain what was impossible to express in everyday language. This is why when one reads his books we find that they are impregnated with a vocabulary appropriate to the knowledge he expresses. Any reader will improve his own language in a spiritual way when reading his books.
Samael Aun Weor achieved complete Self-realization at the age of sixty-one; thus at that age he passed through a terrible ordeal which allowed him to achieve the degree of a Resurrected Master and Return into Shangri-La. Since then, he is operating anonymously in the physical world, while simultaneously continuing his mission from within the Internal Worlds.
This is how his Real Being, Samael, the Spirit of Fire, absorbed him completely within his bosom and became one with him.
The Celestial Man
A great deal of information about Samael, the Spirit of Fire, is written in many esoteric books. In some places Samael is described as a Demon, and in others as a great Angel. This is because there is always movement in the heavens and hells; the demons can renounce evil and work to become Angels, and the Angels can make mistakes and fall into evil. This is the true meaning behind Jacob's Ladder.
And he dreamed, and behold a ladder set up on the earth, and the top of it reached to heaven: and behold the angels of God ascending (to higher realms) and descending (to lower realms) on it. - Genesis 28:12
The ladder is the Kabbalistic Tree of Life.
Samael Aun Weor said regarding this:
I ended up transforming myself into a fallen angel. Many egos resurged within my mind and I became transformed into a true devil. Now, in this present existence, I comprehend the necessity of eliminating my egos, the necessity of performing the Great Work of the Father. Therefore, this is why today I am here speaking to you all, with my hand placed on my heart. Samael Aun Weor is my true name as a Bodhisattva. Samael is the name of my Monad!*
The name Samael Aun Weor is his true, eternal name. Every creature has their own eternal name, which has nothing to do with the profane name we receive at birth.
As he wrote in his book The Zodiacal Course:
Samael Aun Weor is the authentic name of a flame of the great blaze, before whom I must prostrate myself. Samael Aun Weor means "Will of God"...
Samael, the inner Being of Samael Aun Weor, is a great Archangel who has been assisting humanity for ages. He has been known by many names throughout our history, but he is perhaps best known as Ares, Mars, the God of War. His war is always a spiritual one, the war against the corruption of the human mind. Knowing this helps the reader understand why the writings and teachings of Samael Aun Weor are so direct and so potent.
Samael (Ares) is the great cosmic Intelligence which is responsible for the spiritual development of this current humanity, which has long been known as the "Aryan" (from Ares) race. (Unfortunately, this term "Aryan Race" has been corrupted by many ignorant people.) Therefore, he needed his terrestrial part to work here in the physical world on behalf of humanity.
His son, the bodhisattva, fell into disgrace for many centuries, and committed many mistakes. Due to this, the esoterists of past ages knew him as a great demon. Subsequently, the bodhisattva was brought to realize his mistakes, and he worked very hard to rectify them. Now, Samael, the inner Being, has his son standing upright once more, and he was able to deliver his teachings to humanity.
Any neophyte can invoke the Master Samael in the Internal Worlds using the techniques that he gave in many of his books, and investigate all of this directly.