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
Paleo-Hebrew alphabet the Babylonian capture of Judea, when most of the nobles were taken into exile, the Paleo-Hebrew alphabet continued to be used by the people who remained. One example of such writings are the 6th-century BCE jar handles from Gibeon, on which the names of winegrowers are inscribed. Beginning from the 5th century BCE onward, the Aramaic language and script became an official means of communication. Paleo-Hebrew was still used by scribes and others. Some Paleo-Hebrew fragments of the Torah were found among the Dead Sea Scrolls: manuscripts 4Q12, 6Q1: Genesis. 4Q22: Exodus. 1Q3, 2Q5, 4Q11, 4Q45, 4Q46, 6Q2: Leviticus. In