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
Hebrew alphabet general population, many letters have the same pronunciation. They are as follows: Some of the variations in sound mentioned above are due to a systematic feature of Ancient Hebrew. The six consonants were pronounced differently depending on their position. These letters were also called "BeGeD KeFeT" letters . The full details are very complex; this summary omits some points. They were pronounced as plosives at the beginning of a syllable, or when doubled. They were pronounced as fricatives when preceded by a vowel (commonly indicated with a macron, ḇ ḡ ḏ ḵ p̄ ṯ). The plosive and double pronunciations were