I am a latecomer to the scene, and don't wish to preempt more insightful or relevant commentary ...
... nevertheless, for me the Sacra Doctrina cannot trump or contradict the simplicity of "walking the walk."
For a Christian, I think this means that "Faith without works is dead," and thus I subscribe to Paul's version of a strong Faith which is rooted in the proof which comes only through the pudding.
"By their fruits, we shall know them." Think of birds landing on St. Francis, or Jesus, or indeed any `saint' or Holy person. WHY would this occur?
Practice, also, even from common wisdom and a folksy expression, "makes Perfect." This was the injunction of Christ to His Followers:
"Be ye therefore perfect, even as your Father which is in heaven is perfect." ~Matthew 5:48
Nothing equivocal about that ... nor in the affirmation of Christ to the Apostles:
"Verily, verily, I say unto you, He that believeth on me, the works that I do shall he do also;
and greater works than these shall he do" ~John 14:12
Surely it is important to know when to take the Bible literally, and when to comprehend the symbolism being used in an allegory, or the several levels of a parable. Otherwise, we will make the meaning fit our preconceived ideas, especially including those we have been coached, or taught, or accustomed by many long years to accept as normal. Asking questions, I think we remain open to Illumination and to Insight - which are available to all people, all times, everywhere.
The problem with too closely closing one's circle of `approved authorities' - which is a personal decision, and one that WE make, if not always entirely intelligently, or in an informed manner ... is that we shut ourselves off from some of the greatest sources of Inspiration available. Once I buy in to the notion that "all truth must come from x authority, body or group of delegates," and that "none but truth can utter forth therefrom," I have pretty much sealed my mind, heart, body and Soul - effectively or for a time - to greater Guidance and Wisdom. It matters not that these could come in the form of the Buddha approaching us in the subway for change, or that it happens to be a Mahatma who just passed you on the street looking to see if you were paying attention. When we remain wrapped within our own world of pet notions and preconceived fancies, we will detect nothing much other than what it is we are looking for, or what we expect. A flying saucer might land, but that's about what it would take to get our attention out of our brown study. And yes, I speak from experience!
So the Sacra Doctrina, I agree, is not simply words on a page, any more than Love is a physical act to reproduce the species. But they are related, and in the same sense the Sacred Doctrine expresses, sometimes, in Holy Writ and may even be recognized as such. Often, the very pearls and most sublime of the Teaching remains undetected, unsuspected - or utterly unpracticed in life or thought - by the congregation or Community of seekers and believers. This, I am certain, remains a tragedy, for why else are certain Revelations or even scientific, musical, political and economic inspirations given and shared? They are not intended as wall ornaments, and this becomes spiritual materialism.
I always like to try to think about these things at least a bit from the other person's point of view, from the perspective of those Who are giving out the Wisdom to Humanity, and even from the true Angelic Doctors (not to be confused with any human being in particular, or even at all) who stand beyond us on the Ladder of Life. I have many examples of the most sublime Teachings, and certainly Noble communications, issuing from unapproved authorities, such as a teenager in the UK [Matthew Manning], or a housewife in Brussels (I made that up, but it's probably true).
My question would be, how does one's understanding of Sacra Doctrina make room or accommodate the fact that God speaks through us all, at times, and sometimes clearly enough that the folks around perhaps ought to pay more attention [to them, their message, and even their actions & commentary if these measure up to *standards* - you know, the Fruit and all] ... than perhaps to the vicar who is still railing on with that same claptrap `tithe-or-be-damned' stuff, which we hear so often ... or to the latest edict from the Pope? Nothing personal there, of course. I feel like I've been waiting for the current Pope, Pope Francis, for many, many long incarnations - or generations.
Yes, it's my typical wordy response, but those are a few of my thoughts on the Sacred Doctrine, as well as I understand the topic ...
Zagreus ... aka Andrew/Taijasi