Bardaisanites
Daisanites (Arabic sources)
late 2nd – 10th century
attested. Bardaisan is attested (a contemporary of Julius Africanus). His doctrine is reconstructed from one insider dialogue and the hostile Ephrem, which differ significantly.
Leaders
- Bardaisan of Edessa (154–222)
- Harmonius (his son, hymn-writer)
Beliefs
Bardaisan, a philosopher at King Abgar VIII's court, taught that human life is shaped partly by fate (the stars) and partly by nature, but that free will governs moral choices. His Book of the Laws of Countries (written by his pupil Philip) argues this from the different customs of peoples. Later opponents accused him of cosmological dualism and denying bodily resurrection.
Home bases
No home base of its own is pinned in this drop.
Also named in earlier place batches: Edessa (see Persia batch).
Spread
Edessa and upper Mesopotamia. Ephrem in the 4th century says their hymns were still sung, and Ibn al-Nadim and other Arabic writers still list 'Daysaniyya' in the 10th century.
Books
What happened to it
Absorbed or suppressed after Ephrem's and Rabbula's campaigns. Arabic reports from the 10th century still mention them.
Hostile sources
Ephrem the Syrian. Hymns against Heresies; Prose Refutations 4th c.
Hostile.
Eusebius of Caesarea. Church History IV.30 c. 313–325
Hostile toward heresies; quotes earlier documents verbatim. NPNF translation (public domain).
Ibn al-Nadim. Fihrist 987
Neutral outsider.
Their own words
Philip, pupil of Bardaisan. Book of the Laws of Countries (Syriac) early 3rd c.
Insider, surviving.
Sources
- Bardesanes and BardesanitesConfessional source
Catholic Encyclopedia 1913 (confessional). Accessed 2026-11-11.
- Bardesanes
Encyclopaedia Iranica. Accessed 2026-11-11.
- Bardaiṣan
e-GEDSH. Accessed 2026-11-11.