It refers to the Akasha Tatwa.

And the Spirit of God moved upon the face of the (Akasic) waters.
Let there be a firmament in the midst of the (Akasic) waters,
And let it divide the (Akasic) waters (of Daath) from the (Akasic) waters (of Yesod)
Let the (Akasic) waters under the heaven (Yesod) be gathered together unto one place (Hod), and let the dry land (Astral Body) appear: and it was so.
And God said, let the (Akasic) waters (of Yesod) bring forth abundantly the moving creature that hath life.
And God created great creatures, and every living creature that moves, which the (Akasic) waters brought forth abundantly, after their kind, and every winged fowl (in Daath) after his kind.
And God blessed them, saying, be fruitful, and multiply, and fill the (Akasic) waters in the seas, and let fowl (souls) multiply in the earth (physical body).

And, behold, I, even I, do bring a flood of (Akasic) waters upon the earth, to destroy all flesh, wherein is the breath of life, from under heaven (of Yesod); and every thing that is in the (physical) earth shall die.
But with thee will I establish my covenant; and thou shall come into the (Akasic) ark, thou, and thy sons, and thy wife, and thy sons' wives with thaee.
And of every living thing of all flesh, two of every sort shall thou bring into the (Akasic) ark, to keep them alive with thee; they shall be male and female. - Excerpts from the book of Genesis

(Sanskrit, bhavachakra; Tibetan, srid pa'i 'khor lo / Shri Pa'i Korlho) The world of illusion; the cycle of birth and death. Related to the Tenth Arcanum: Retribution.

In Buddhism, the Wheel of Life is depicted as a great cycle held in the claws of Yama, the lord of death. The wheel illustrates the cyclical nature of karmic conditioning within which all beings are migrating.

In Hebrew, Chokmah (the second sephirah of the Tree of Life). In Sanskrit, Bodhi (the name of the tree under which the Buddha awakened).

"The word wisdom is derived from vid, videre (to see) and from dom (judgment).  Thus, wisdom alludes to that which one can see with the senses of the soul and of the Innermost; to the wise judgments which must be based on the ultra-sensorial perceptions and not simply on dogmatic intellectualism or vain professional sufficiency, which are already in declination and decrepitude." - Occult Medicine and Practical Magic

Some terms used in Spanish have a very different implication in English; the Spanish word for witch implies someone who is managing forces of nature for selfish or harmful ends. In English, the word witch is commonly used in this way, but can also describe someone who is working with forces of nature in order to establish harmony. In general, when Samael Aun Weor describes a witch, he is using the common (if unfortunate) use of the word: to indicate a person who consciously manages forces of nature while motivated by desire, lust, greed, anger, etc. and who by matter of course can awaken their consciousness in the negative way, becoming a demon.

"Witches? Sorcerers? Black magicians? They are found everywhere like wild weeds." - Revolutionary Psychology

"All of us as children listened to many stories of witches and fairies. Our grandmothers always used to tell us stories of witches that at midnight rode on their brooms and travelled through the clouds. Although it will seem incredible to many students of occultism, Theosophy, Rosicrucianism, etc., those witches really exist. They do not ride brooms as grandmothers believe, but they do know how to travel through the air. The so-called “witches” travel with their body of flesh and bone through space. They know how to make use of hyperspace and travel from one place to another with the physical body. Soon astrophysics will discover the existence of hyperspace." - The Perfect Matrimony

"Much is said about "vampirism;" it is said that "many women are vampirized." I don't deny that there are sexual vampires (yes, they exist); "Draculas" have existed and continue existing; further, it is normal today that they abound everywhere (presently, they exist and are everywhere), they are commonly called “warlocks." It is good to remember the adventure of the Trojans with the famous "hags (witches; sorceresses)" of whom Virgil the Poet of Mantua spoke, in The Aeneid. There is no doubt that when those "black sorceresses," those hags, put their bodies in a Jinn state, they are able to transport themselves to different locations of the Earth. If they have enemies, they approach them and they bite them. The wound appears, later, like a black mark in this or that part of the body. So then, indeed, they are not exactly vampires, but hags and warlocks. That is all. They are called "witches." They are something very common, and you know that." - From the lecture Questions of Importance to Women

"Witchcraft is behind thirty percent of common crimes." - Endocrinology and Criminology

"The establishment of a consecutive order of the different parts of the Work, related to this extremely serious subject of eliminating the psychic aggregates, allows us to generate a Work-Memory. This is quite interesting, and even extremely useful in the question of inner development. This Work-Memory can certainly give us distinct psychological “photographs” of the different stages of our past. As a whole, it will bring to our imagination a vivid and even repugnant imprint of what we were before beginning the radical psycho-transforming Work. There is no doubt that we would never wish to return to that horrifying image, that vivid representation of what we once were. From this point, such psychological “photography” is useful as a means of confrontation between a transformed present and a regressive, stale, clumsy and unfortunate past. The Work-Memory is always recorded on the basis of successive psychological events registered by the center of Psychological Self-observation." - The Great Rebellion