sentences:  The Eastern churches accept Antioch as the church founded by St Peter (see the Greek Orthodox Church of Antioch and the Syriac Orthodox Church).It was in the establishment of the Eastern Roman Empire by Emperor Constantine the Great that Christianity was legalized (Edict of Milan, 313).It was not until then, that systematic Roman persecution of Christians stopped, although it did resurface later, though temporarily, under Roman Paganism (Emperor Julian the Apostate).