Epistle to the Philadelphians (Long Version)
Chapter 2: Maintain Unity with the Bishop
Therefore, as children of light and truth, avoid dividing your unity and the wicked doctrine of the heretics, from whom "a defiling influence has spread across the earth." But where the shepherd is, there you, as sheep, should follow. For there are many wolves in sheep’s clothing, who, through a harmful pleasure, capture those who are running towards God; but in your unity, they will have no place.