The Sphere of Luna, known in Hebrew as Yesod (יסוד), translates to "Foundation." It is the ninth Sephirah on the Qabalistic Tree of Life, situated at the base of the Pillar of Equilibrium, directly above Malkuth. This sphere is the receptacle for all the forces of the upper Sephiroth, serving as the astral body or the vehicle through which the divine light is transmitted to the material world. Its nature is one of reflection, illusion, and the subconscious, acting as a mirror that both receives and projects the energies of the cosmos.

Position on the Tree of Life

Yesod is the ninth Sephirah, corresponding to the ninth step on the scale of the Tree of Life. It is the last of the seven lower Sephiroth (the building of the Microprosopus) and the immediate foundation for Malkuth, the Kingdom. Its position on the Middle Pillar connects it directly to Kether and Tiphereth, making it a crucial conduit for the flow of divine energy into the physical world. In the path of the initiate, Yesod represents the astral plane, the realm of dreams, visions, and the formative world where ideas take shape before descending into matter.

Astrological and planetary correspondence

The Sphere of Luna is astrologically and alchemically assigned to the Moon. This correspondence is not merely symbolic but structural: the Moon's phases, its reflective nature, and its dominion over tides, cycles, and the subconscious directly mirror the function of Yesod. The Moon is the closest celestial body to Earth, just as Yesod is the Sephirah closest to Malkuth. It governs the principles of growth, fertility, illusion, and the ever-changing, receptive feminine principle. In the Hermetic tradition, the Moon is the gatekeeper of the astral plane, and its influence is felt in all matters of magic, dreams, and psychic impression.

Historical context

The concept of the Sphere of Luna as Yesod is deeply rooted in the medieval and Renaissance Qabalah, particularly as systematized in the Zohar and later in the works of Moses Cordovero and Isaac Luria. The association of the Moon with the ninth Sephirah is explicit in the Sefer Yetzirah, where the paths and spheres are linked to the celestial bodies. In the Hermetic Order of the Golden Dawn, the Sphere of Luna was central to their magical practice, as it was considered the sphere of the Astral Light—the medium of all magical phenomena. Aleister Crowley, in Liber 777, codified this correspondence, listing the Sphere of Luna under the column "English of Col. VI" for the row of Yesod. This table entry consolidates the Moon's attributes: its number is 9, its magical image is a beautiful naked man, its god-name is Shaddai El Chai, its archangel is Gabriel, and its planetary intelligence is the Spirit of the Moon (the Khabs). The sphere's historical significance is also seen in its connection to the Islamic Qabalah, where the Moon (Qamar) is associated with the angelic order of the Kerubim, and in the Renaissance magic of Marsilio Ficino, who wrote extensively on the lunar influence on the soul.

Closing paragraph

In the table of Liber 777, the Sphere of Luna appears at step 9 (Yesod) under the column "English of Col. VI." It is listed alongside its corresponding god-name, archangel, and planetary intelligence, providing a concise reference for the Qabalistic practitioner. The entry serves as a key to understanding the lunar nature of this Sephirah, its role as the foundation of the astral world, and its function as the bridge between the divine and the material.