Is there some way that this “pillar and foundation of truth” phrase can actually fit into a Protestant model?
Well, a phrase or a sentence can be forced to fit a meaning, if the will to force is there.
If we take the phrase to mean its first, obvious, intended meaning: we get a unified church whose very solidity allows the truth to stand upon it, as a mansion rests upon its rock foundation.
This is taking unity in its obvious and first sense. It is taking the meaning of pillar and foundation in their obviously intended senses.
It’s amazing to me that Protestants somehow co-opted the tagline that it is Protestants who literally interpret the bible, while Catholics don’t take the bible seriously.
Over and over again, I find the opposite to be the case. An obvious example is, Catholics eat and drink the flesh and blood of the Lord, as He told us literally to do. He said “This IS my body,” not “this resembles or signifies, or reminds of”, but IS. “Take and Eat.” Catholics take these verbs in their first meanings.
We have on earth an obvious, human, concrete leader; by the very basic fact of having a visible human head who we follow, we are one body. At the first level, it is no more subtle than that. Under his authority to teach and discipline we are able to be one with him, with each other, and with the real head of our body, Jesus Christ.
Another example, yes, Adam and Eve probably ate a fruit–why not? Their sin was committed by humans, and we humans exist in time and space, and we do things with our bodies. We glorify God with them; we sin against Him with them.
If all this seems less than subtle, if it seems childlike, then since it is the childlike who will enter Heaven, Catholics need not be abashed.
One principle of bible interpretation is that a spiritual interpretation of a passage cannot contradict the interpretation which is the “intended literal” interpretation. There is always a literal interpretation which is what the author literally intended. Then there are further layers of interpretation (four, I think, kinds of spiritual interpretation…). But never contradicting that meaning which is the intended literal interpretation.
Example: “and the sun stood still in the sky”. Intended literal–a huge miracle of the sun and earth standing still in relation to each other. (not the miracle of the sun standing still, because the sun always stands still in relation to earth).
(The rules of biblical interpretation I am giving from memory from St. Augustine’s book
On Interpretation.)
Is any of this speaking to your area of puzzlement?