Th (also written as Ṭh or Ṭhēth in some transliterations) is the ninth letter of the Hebrew alphabet, corresponding to the phoneme /t/ with a pharyngealized or emphatic articulation (distinct from the plain Tav). Its name derives from the Phoenician teth, meaning "wheel" or "basket," and it carries the numeric value of 9.

Position on the Tree of Life

Th is assigned to Path 19, which connects Chesed (Mercy) to Geburah (Severity) on the Tree of Life. This path represents the transformative power of the letter, bridging the expansive and restrictive forces of the sephiroth.

Astrological and planetary correspondence

In the Hermetic Qabalah, Th corresponds to the zodiac sign Leo (the Lion), ruled by the Sun. This association emphasizes the letter's themes of royalty, vitality, and the solar fire of creation.

Historical context

The letter Teth appears in the Hebrew Bible as the initial letter of tov ("good") and is often linked to the concept of hidden goodness or the divine spark within creation. In the Sefer Yetzirah, it is one of the twelve "simple letters" governing the month of Av (July–August) and the sense of sight. In later Qabalistic texts, such as the Zohar, Th is associated with the serpent of wisdom (the Nachash) and the coiled energy of the kundalini, reflecting its shape as a coiled or enclosing form. The letter's numerical value 9 also connects it to the nine months of gestation, symbolizing hidden potential and the process of spiritual birth.

In the context of Crowley's Liber 777, Th appears in Column LI (English equivalent of the Hebrew letter) at step 19, where it is listed alongside its corresponding Hebrew character (Teth) and its astrological attribution to Leo. This placement underscores the letter's role as a key to understanding the dynamic interplay of solar and lunar forces within the Qabalistic system.