Position on the Tree of Life

Ph corresponds to the fifth sephirah, Geburah, the sphere of Mars, severity, and the red pillar of the Tree. This placement aligns the aspirated plosive with the explosive, boundary-breaking energy of the fifth emanation—the power that cuts, burns, and purifies.

Astrological and planetary correspondence

Geburah is ruled by Mars, the planet of war, force, and active destruction. The sound ‘Ph’—a forceful expulsion of breath through the lips—embodies the martial quality of Mars: sharp, initiating, and irreversible. In Hebrew, the letter Peh is also associated with the planet Mars in the Sefer Yetzirah tradition, where it is one of the twelve simple letters governing the zodiacal sign of Mars (though later Qabalists assign it directly to the sephirah).

Historical context

The letter Peh (פ) appears in the earliest Qabalistic texts as the ‘mouth’ of God, through which the creative word issues forth. In the Sefer Yetzirah, Peh is one of the three ‘mothers’? No—that is Aleph, Mem, Shin. Peh is a simple letter, governing the sense of speech and the power of the mouth. In the Zohar, the letter Peh is linked to the sephirah Geburah because its form (a curved shape with a tongue-like projection) suggests the devouring mouth of divine judgment. The English transliteration ‘Ph’ (rather than ‘P’ or ‘F’) preserves the aspirated quality of the Hebrew letter when it appears with a dagesh lene—a hard, breathy stop that in Greek transliteration becomes φ (phi). This aspirate is crucial: it marks the sound as a force rather than a mere occlusion, fitting the martial nature of Geburah.

In the Hermetic Order of the Golden Dawn, the letter Peh is assigned to the path of the Tower (Atu XVI) on the Tree of Life, but in the column of the sephiroth (Col. LI of Liber 777), it is the English equivalent for Geburah itself. The choice of ‘Ph’ over ‘P’ emphasizes the explosive, breath-driven character of the letter—a sound that begins with a stoppage and ends in a rush of air, much like the sudden release of Mars’s wrath.

Closing

In the table of Liber 777, at the step of Geburah (scale step 5), the English equivalent ‘Ph’ stands for the Hebrew letter Peh, the mouth of severity—a phonetic glyph of the Mars-force that speaks, judges, and consumes.