Canon 19
It behooves those who preside over the churches, every day but especially on Lord’s days, to teach all the clergy and people words of piety and of right religion, gathering out of Holy Scripture meditations and determinations of the truth, and not going beyond the limits now fixed, nor varying from the tradition of the God-bearing fathers. And if any controversy in regard to Scripture shall have been raised, let them not interpret it otherwise than as the lights and doctors of the church in their writings have expounded it, and in those let them glory rather than in composing things out of their own heads, lest through their lack of skill they may have departed from what was fitting. For through the doctrine of the aforesaid fathers, the people coming to the knowledge of what is good and desirable, as well as what is useless and to be rejected, will remodel their life for the better, and not be led by ignorance, but applying their minds to the doctrine, they will take heed that no evil befall them and work out their salvation in fear of impending punishment.
