You wrote:
“It seems that your argument is that an assuredly inspired magisterium...”
No such thing nor does the Church claim any such thing. It is pathetic when anti-Catholics don’t even know what they’re arguing for or against.
“...is necessary to establish writings as Divinely inspired, and for that matter, to sanction men of God as having authority. Thus those without it are spurious.”
When you learn what the Magisterium is, get back to me.
Sorry for this very late reply, but i had missed your comment until just now when i was reviewing past comments. In any case, as seen from my previous comments , what i meant to say was, "assuredly infallible magisterium" (when speaking according to its scope and subject based criteria) as distinct from "inspired," which was a mistake more careful proof reading should have caught.