Council of Seleucia-Ctesiphon: Under Yahbalaha 420 AD (Paperback) (ISBN-13: 9781087970455)

This second council of the Persian church was of a far smaller scope than its predecessor ten years prior. The intention was to both reduce some of the tensions that existed between them and the church in the Roman Empire, and to re-state some of the church canons which had been instituted under Mar Isaac, but had yet to be fully enforced by other episcopal authorities.