About the Mystery of the Letters divine creation in the biblical Creation according to Genesis, and of 22 corresponding works of salvation by Christ, elaborating this theory through descriptions of the various letters and interpretations of their shapes. This is followed by an account of the history of the alphabet, which weaves together elements of Greek mythology and the Hebrew Bible as well as several Jewish and pagan texts: according to this account, the Hebrew alphabet was first handed down to mankind by divine inspiration during the generation of Enoch, but was lost during the Confusion of Tongues. God subsequently revealed the Greek alphabet on a
Hebrew alphabet Hebrew letters started being used to denote numbers in the late 2nd century BC, and performed this arithmetic function for about a thousand years. Nowadays alphanumeric notation is used only in specific contexts, e.g. denoting dates in the Hebrew calendar, denoting grades of school in Israel, other listings (e.g. שלב א׳, שלב ב׳ – "phase a, phase b"), commonly in Kabbalah (Jewish mysticism) in a practice known as gematria, and often in religious contexts. The numbers 500, 600, 700, 800 and 900 are commonly represented by the juxtapositions ק״ת, ר״ת, ש״ת, ת״ת, and ק״תת respectively. Adding a geresh ("׳") to