 The oldest complete manuscript dates to 1030.All the complete manuscripts are liturgical in nature.Many of the palimpsests come from Saint Catherine's Monastery in Sinai (e.g., the Codex Climaci Rescriptus, Codex Sinaiticus Rescriptus), the Cairo Genizah and the Umayyad Mosque in Damascus and often transmit rare texts lost in the Greek transmission (e.g.