This attitude was not only motivated by fear of finding itself in a similar situation, but was also the result of bad experiences with doctrinal "novelties" introduced by the ancient heresies (regarding Trinitarian and Christological doctrine) and, more recently, by the Western Church (the Filioque clause, the primacy of Rome, compulsory celibacy for clergy, purgatory, the
Azymite controversy [the use of unleavened bread in the eucharist] etc.).
He has forbidden the offering of the Mass and closed the Latin churches, calling us
azymites. He has persecuted us in word and in deed.