We ought also to fast and to abstain from vices and sins and from superfluity of food and drink, and be Catholic. We ought also to visit Churches frequently and to reverence clerics not for themselves, if they be sinners, but on account of their office and administration of the most holy Body and Blood of our Lord Jesus Christ, which they sacrifice on the altar and receive and administer to others.
And let us all know for certain that no one can be saved except by the Blood of our Lord Jesus Christ and by the holy words of the Lord which clerics say and announce and distribute and they alone administer, and not others.
Saint Francis of Assisi
Epistola ad Fideles II (Letter to the Faithful II)
