Person

Cosmas the Priest

10th century · 10th century · Also known as Presbyter Cosmas

Cosmas the Priest was a Bulgarian churchman of the 10th century and author of the Sermon against the Heretics, the main source on the early Bogomils. Written probably in the later 10th century, it condemns Bogomil teachings while also criticising lax clergy and describing the hardships of the peasantry. It is one of the most important works of Old Bulgarian literature.

Cosmas the Priest
Image: Презвитер Козма, Presbiter Cosma · Public domain · Wikimedia Commons

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First Bulgarian EmpireSocioeconomy

See also

Cite this entry
APA
The Epoch Institute. (2026). Cosmas the Priest. In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/cosmas-the-priest
MLA
“Cosmas the Priest.” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/cosmas-the-priest. Accessed .
Chicago
The Epoch Institute. “Cosmas the Priest.” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/cosmas-the-priest.
Harvard
The Epoch Institute (2026) ‘Cosmas the Priest’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/cosmas-the-priest (Accessed: ).

Last reviewed October 2026Random entry ↻