Michael J. Birnie served the St. Thomas Parish of the Assyrian Church of the East, in Seattle, Washington, from 1968 until he died on January 6, 2013. Self-taught in the Syriac language, he has translated many liturgical texts of the Assyrian Church of the East from Syriac into English, as well as canonical and theological texts. Mar Awa III (Royel), SEOD (2007), Pontifical Oriental Institute, is the supreme head of the Assyrian Church of the East worldwide. He has published many monographs, translations and articles on the liturgy and patrology of the Assyrian Church of the East, including Mysteries of the Kingdom (Edessa Publications, 2011).