Babai the Great

Babai the Great (ܒܵܒܲܝ ܪܲܒܵܐ bābay rabbā, c. 551 – 628) was an early church father of the Church of the East. He set several of the foundational pillars of the Church, revived the monastic movement, and formulated its Christology in a systematic way. He served as a monastic visitor and coadjutor with Mar Aba as unofficial heads of the Church of the East (formerly falsely referred to as "Nestorian Church") after Catholicos Gregory until 628 AD, leaving a legacy of strong discipline and deep religious Orthodoxy. He is revered in the modern Assyrian Church of the East and Ancient Church of the East.