It is an ancient and vital stage of spiritual development to observe celibacy or sexual abstenance. However, it is only a stage of the path to complete development. Just as a single person cannot create a child, they also cannot create the soul. They can purify their mind and heart, but cannot be "born again."
Because the highest teachings of spirituality related to sexual cooperation were always kept in utmost secrecy in order to preserve their integrity, it is now a common misconception to believe that the complete renunciation of sex is the path to spiritual liberation. In reality, the sexual act can only be totally renounced after one has formed the "soul," also called "the Solar Bodies" or the three kayas. These are symbolized by the chariot of Ezekiel or Arjuna, and by the Merkabah of the Kabbalah.
Two important aspects of Christianity are the Second Death and the Second Birth. The Second Death occurs when someone fails to create the Solar Bodies (the Soul) before their Lunar Bodies (mind, emotion) begin to devolve. The Lunar Bodies are gifts of nature, they belong to nature, and everything within nature always returns to nature. Notice how plants grow from the ground, the animals eat their fruit, the fruit is transformed into waste and the waste fertilizes the ground. The physical body of any person comes from the energy of the earth, and when it dies, it returns to the earth. The process is exactly the same with the Lunar Bodies, with the exception that they are not physical, but rather "protoplasmic." The Lunar Bodies evolve through the mineral, plant and animal kingdoms, and the summit of evolution is the humanoid kingdom (incorrectly called humanity). What this means is after the humaniod kingdom, the Lunar Bodies (the ego) begin to devolve, and this process of devolution is the torment and suffering of Hell. Unfortunately, the Soul-Essence (the only good thing that lies within) is trapped within the Lunar Bodies, thus when these vestments are called back to nature, the Essence is pulled along with them. It is said that one becomes trapped in Hell because one must suffer for a long period of time until these Lunar Bodies are destroyed. The entire process is called the Second Death; the death of the body is the first death, the death of the ego is the Second Death. The Essence trapped within the ego is immortal.
The Second Birth is that which Jesus attempts to teach Nicodemus about. Jesus states that one must be born again in order to enter Heaven.
Jesus declared, "I tell you the truth, no one can see the kingdom of God unless he is born again."
"How can a man be born when he is old?" Nicodemus asked. "Surely he cannot enter a second time into his mother's womb to be born!"
Jesus answered, "I tell you the truth, no one can enter the kingdom of God unless he is born of water and the Spirit. Flesh gives birth to flesh, but the Spirit gives birth to spirit. You should not be surprised at my saying, 'You must be born again.' The wind blows wherever it pleases. You hear its sound, but you cannot tell where it comes from or where it is going. So it is with everyone born of the Spirit."
"How can this be?" Nicodemus asked.
"You are Israel's teacher," said Jesus, "and do you not understand these things?" – John 3 (read more)
What Nicodemus failed to understand was that the same energy that gives birth to the flesh can also give birth to the "spirit," the Solar Bodies. Sex is the only pathway to be born, and it is the only path to be born again. The waters of life are the waters of Genesis upon which Jehovah Elohim hovered. They are the waters of Creation, the creative waters, the sexual energy. To see the kingdom of God one must reach the Second Birth, because when this occurs one operates with flesh that did not come from nature, but from one's own inner divinity. The Solar Bodies are immortal and self sustaining – they are not related with the evolutive and devolutive mechanics of mother nature. Building the Solar Bodies is how one properly prepares themselves for what is described in the parabale of the "Wedding Banquet," in which the King thew out the man who was not dressed properly. In other words, that man attempted to enter Heaven with the filthy rags of the ego, thus he was thrown into Hell.
Those students of occultism who think they can attain Self-realization without the Arcanum A.Z.F. (sexual magic) are absolutely mistaken. Madame Blavatsky, after having written the six volumes of The Secret Doctrine, stated that those who want to know the mysteries of Chiram must search among the ancient Alchemists. She was in Agarthi. She renounced Nirvana in order to achieve the Venustic Initiation. She is already a Twice-Born because she possesses the Solar Bodies and lives in the sacred monasteries. She is going to return into this world which is more bitter than bile. She is preparing to take a physical body in the United States, in New York. The great Master Blavatsky was a true Yogini, a disciple of Kout Humi, although after becoming a widow of the Count Blavatsky she married Colonel Olcott in order to work with the Arcanum of sexual magic. Only in this way did she achieve in-depth realization.
The great Yogi-Avatar Sri Lahiri Mahasaya was called to the Initiation by the immortal Babaji when he already had a spouse. Thus, this is how the Yogi-Avatar was Self-realized. In Hindustan, sexual magic is known by the Sanskrit term Urdhvarata.Authentic Yogis practice sexual magic with their spouse. There are two types of Bramacharya (sexual abstinence), solar and lunar. The solar type is for those that have performed the Second Birth. The lunar type is that absurd sexual abstinence that serves only to produce filthy, nocturnal sexual pollutions with all of its fatal consequences. – Samael Aun Weor, The Initiatic Path in the Arcana of Tarot and Kabbalah
Bramacharya without the methods of sexual transmutation always result in failure. It is good to note that some Yogis, such as Swami Sivananda, publicly teach "Bramacharya" with the knowledge of sexual transmutation, and therefore the infamous nocturnal emissions of those attempting to renounce sex are avoided. Nevertheless, without Sexual Magic total self-realization cannot be attained.
In Tibetan Buddhism, especially if you look at the iconography of the deities with their consorts, you can see a lot of very explicit sexual symbolism which often gives the wrong impression. Actually, in this case the sexual organ is utilized, but the energy movement which is taking place is, in the end, fully controlled. The energy should never be let out. This energy must be controlled and eventually returned to other parts of the body. What is required for a Tantric practitioner is to develop the capacity to utilize one's faculties of bliss and the blissful experiences which are specifically generated due to the flow of regenerative fluids within one's own energy channels. It is crucial to have the ability to protect oneself from the fault of emission. It is not just a purely ordinary sexual act. And here we can see there is a kind of special connection with celibacy. Especially in the practice of the Kalachakra Tantra, this precept of protecting oneself from the emission of energy is considered to be very important. The Kalachakra literature mentions three types of blissful experience: one is the blissful experience induced by the flow of energy; one is the immutable blissful experience; and one is the mutable blissful experience. To me, when Buddha took the celibacy vow, at that level he did not explain all the reasons behind that rule or that discipline. The complete explanation comes when we know the Tantrayana system. – The 14th Dalai Lama
Buddha, Jesus, Krishna, Mohammad, Quetzalquatl, etc., all practiced sexual magic, yet they did so in secrecy. In the previous era, in order to be initiated into the mysteries of sexuality, one had to first purify themselves through many years of intense efforts, and only then would they be told the secret of sexual magic. For example, a Tibetan monk who claimed that he had reached the stage of anuttarayoga tantra asked the Thirteenth Dalai Lama if he could practice with a consort; when the Dalai Lama asked for proof of his attainment, this monk took a yak's horn and tied it into a knot, therefore demonstrating his mastery over energy and matter. Only then did the Dalai Lama give his blessing for this monk to practice the Highest Yoga Tantrayana (sexual magic).
In the past everything related with sexual magic was kept in the deepest secrecy in order to preserve it. Since 1950, the teachings have been revealed so that all who would use them can. Now the mysteries of Eden (sex) are given to anyone who wishes to take advantage of them.