Epsilon (ε, Ε) is the fifth letter of the Greek alphabet, representing the short vowel sound /e/ as in 'bet'. Its name, from the Greek ἒ ψιλόν (e psilon), means 'bare e' or 'simple e', distinguishing it from the diphthong αι (ai) which had come to be pronounced the same way. The letter derives from the Phoenician letter he (𐤄), originally a pictograph of a man with raised arms, signifying 'behold' or 'window'. Numerically, epsilon has the value 5.

Position on the Tree of Life

Epsilon occupies the fourth step of the Greek Alphabet scale, corresponding to the Sephirah Chesed (Mercy) on the Tree of Life. This placement aligns it with the expansive, merciful, and formative power of the number 4, the sphere of Jupiter, and the divine name El. As a letter of Chesed, epsilon carries the quality of loving-kindness, structure, and the first outpouring of creative energy from the supernal triad.

Astrological and Planetary Correspondence

By virtue of its Chesed association, epsilon is linked to the planet Jupiter (צדק, Tzedek). This planetary influence reinforces themes of expansion, benevolence, authority, and the establishment of law and order. The letter’s numerical value of 5, however, also connects it to the Sephirah Geburah (Severity) on a different axis, hinting at a dynamic tension between mercy and judgment that is resolved in the higher synthesis of Chesed.

Historical Context

In the Greek magical papyri and later Hermetic traditions, epsilon appears as a sacred letter with specific numerical and phonetic power. The Neoplatonic philosopher Iamblichus, in his De Mysteriis, discusses the 'vocalic' letters of the Greek alphabet as symbols of the divine powers, with each vowel corresponding to a planetary sphere. Epsilon, as the second vowel, was often associated with the planet Jupiter and the creative, ordering principle of the cosmos.

Within the Qabalistic framework adopted by the Hermetic Order of the Golden Dawn, the Greek alphabet was systematically mapped onto the 32 Paths of the Tree of Life. Epsilon’s assignment to Path 15 (the Hebrew letter Heh) and its placement on the 4th scale step (Chesed) is a deliberate synthesis of Greek and Hebrew letter mysticism. The Golden Dawn’s Liber 777 codifies this correspondence, making epsilon a key symbol for the formative, expansive aspect of the divine will.

In the context of the Corpus Hermeticum, the letter epsilon appears in the famous 'Epsilon of Delphi' (Ε), a sacred symbol inscribed on the Temple of Apollo, often interpreted as 'Thou art' (Εἶ), signifying the eternal, self-existent nature of the divine. This aligns with Chesed’s role as the first emanation of the divine into form.

In Liber 777

In the table of Liber 777, epsilon (ε) appears at the fourth step of the Greek Alphabet scale, directly under the column for the Greek Alphabet itself. It is the letter of Chesed, the sphere of Jupiter, and the number 4. This single cell entry serves as a fixed point in the vast web of correspondences, linking the Greek letter to the Sephirah of Mercy and the planetary intelligence of expansion and grace.