https://www.catholic.org/encyclopedia/view.php?id=10570
From the time of Diotrephes ( 3 John 1:9-10 ) there have been continual schisms, of which the greater number were in the East. Arianism produced a huge schism...
eastern schismcatholic onlineencyclopediavolume
https://www.catholic.org/encyclopedia/view.php?id=4119
From the time of Diotrephes ( 3 John 1:9-10 ) there have been continual schisms, of which the greater number were in the East. Arianism produced a huge schism...
eastern schismcatholic onlineencyclopediavolume