It seems that your argument is that an assuredly inspired magisterium 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.
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.