All the anxiety of scrupulous persons consists in the fear lest, in what they do, they are not acting with scruple merely, but with real doubt as to the act being simple, and are therefore incurring sin. But the chief thing they ought to consider is this: that he who acts in obedience to a learned and pious confessor, acts not only with no doubt, but with the greatest security that can be had upon earth, on the divine words of Jesus Christ, that he who hears his ministers is as though he heard himself: He that heareth you heareth Me.
--St. Alphonsus Liguori, The Way of Salvation and Perfection
