Work dossier · summary and historical context
De sacris jejuniis is a Greek treatise on fasting attributed to John of Damascus (c. 675–749), but its earliest secure attestation is in 10th-century Byzantine florilegia, and it is absent from early Damascene catalogues. The work survives in a single medieval manuscript tradition, known only through a 17th-century printed edition based on a 12th-century copy. It was cited by later Byzantine canonists such as Matthew Blastares in discussions of fasting discipline but never entered standard patristic collections in the West. The khazarzar edition lacks a critical apparatus, obscuring textual variants and scribal interventions.
De sacris jejuniis is significant as a witness to Byzantine fasting discipline and the reception of John of Damascus's authority in later centuries. Its uncertain attribution highlights the fluidity of patristic authorship in medieval manuscript traditions. The treatise's citation by canonists like Matthew Blastares shows its role in shaping Eastern Orthodox practice, while its absence from Western collections underscores the divergence between Eastern and Western patristic canons.
The treatise is attributed to John of Damascus, a Greek monk and theologian active at the Monastery of Mar Saba in Palestine during the 8th century. However, the work is not listed in the earliest catalogues of John's writings, and its first secure attestation appears in 10th-century Byzantine florilegia, suggesting it may be a later composition or a pseudepigraphon. The text survives in a single medieval manuscript tradition, with the earliest known copy dating to the 12th century, preserved in a 17th-century printed edition. It was used by Byzantine canonists like Matthew Blastares (14th century) in discussions of fasting discipline, indicating its circulation in Eastern monastic and canonical circles. The addressee, Lord Cometas, is otherwise unknown, and the title 'spiritual brother' suggests a monastic or clerical recipient. The work never entered Western patristic collections, limiting its influence to the Byzantine tradition.
Apparatus · what the pipeline recorded
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