About the Mystery of the Letters the mid-6th century, in which Mar Saba had played an important role. The anonymous author of the treatise declares he was prompted to the study of the secret meanings of the letters by the words of the Apocalypse, "I am the Alpha and Omega", and that he subsequently received a vision about them on Mount Sinai. The author proposes a re-modelled Greek alphabet reduced to 22 letters on the model of the 22 letters of Hebrew (discounting Xi Ξ and Psi Ψ), and with the Hebrew letter names. He then interprets these letters as symbolic figures of 22 works of
Phoenician alphabet where it evolved and was assimilated by many other cultures. The Paleo-Hebrew alphabet is a local variant of the Phoenician alphabetical script. Another derivative script is the Aramaic alphabet, which was the ancestor of the modern Arabic script. The Modern Hebrew script is a stylistic variant of the Aramaic script. The Greek alphabet (and by extension its descendants, such as Latin, Cyrillic, Runic, and Coptic) was also derived from Phoenician. As the letters were originally incised with a stylus, most of the shapes are angular and straight, although more cursive versions are increasingly attested in later times, culminating in the