On the "branch theory"

…the godless system of the heresies is a road with many branches, and whenever a man has strayed from the one straight way, then he falls down precipices again and again.
St. Cyril of Jerusalem

The enemy of the Son

…many of those who are falsely called Christians, and wrongfully addressed by the sweet name of Christ, have ere now impiously dared to banish God from His own creation. I mean the brood of heretics, those most ungodly men of evil name, pretending to be friends of Christ but utterly hating Him. For he who blasphemes the Father of the Christ is an enemy of the Son.
St. Cyril of Jerusalem

Church

...where the voices of men, of children, and of women, arise in our prayers to God mingling and resounding like the waves which beat upon the shore. This Church also enjoys a profound calm, and malicious spirits cannot trouble it with the breath of heresy.
St. Basil the Great