Mar Saba letter

Mar Saba letter
Mar Saba monastery

The Mar Saba letter is a Greek document which scholar Morton Smith reported in 1960 that he had discovered in the library of the Mar Saba monastery in 1958. The document has been lost and now only survives in two sets of photographs. The text purports to be an epistle of Clement of Alexandria and contains the only known references to a "Secret Gospel of Mark".