The time had now come for Gregory, who was still a layman and father of two sons, to receive ordination; so he went to Caesarea, where Leontius ordained and consecrated him catholicos or vicar-general of Armenia.
A renegade Armenian Catholicos of the 7th century named Isaac has preserved to us a document which sums up their tenets.
In the printed text this document, entitled An Invective Against the Armenians, is dated 800 years after Constantine, but the author Isaac Catholicos almost certainly belonged to the earlier time.
According to the History of Armenia which bears his name he was a pupil of the two fathers of Armenian literature, the patriarch or catholicos Sahak the Great and the vartabed Mesrob.
There is a small Episcopalian body, which has a large unfinished church, and a schismatic "catholicos," who has vainly tried to gain acceptance into the Anglican communion.