Council of Seleucia-Ctesiphon
The Council of Seleucia-Ctesiphon, also called the Council of Mar Isaac, met in AD 410 in Seleucia-Ctesiphon, the capital of the Persian Sassanid Empire. Convoked by King Yazdegerd I (399–421), it organized the Christians of his empire into a single structured Church, which became known as the Church of the East. It is often compared to Constantine's Edict of Milan, approximately a century earlier. The events of this council are documented in the Synodicon Orientale.
Ruined palace at Ctesiphon
The Church of the East or the East Syriac Church, also called the Church of Seleucia-Ctesiphon, the Persian Church, the Assyrian Church, the Babylonian Church or the Nestorian Church, is one of three major branches of Nicene Eastern Christianity that arose from the Christological controversies of the 5th and 6th centuries, alongside the Miaphisite churches and the Chalcedonian Church.
Ruins of the Monastery of Mar Eliya in Mosul, Iraq in 2005. It was destroyed by ISIS in 2014.
Palm Sunday procession of Nestorian clergy in a 7th- or 8th-century wall painting from a church at Karakhoja, Chinese Turkestan
Mogao Christian painting, a late-9th-century silk painting preserved in the British Museum.
Feast of the Discovery of the Cross, from a 13th-century Nestorian Peshitta Gospel book written in Estrangela, preserved in the SBB.
