Proof is found every day in your own circles because the magisterium and the church fathers that the magisterium revere quote the scriptures religiously as authoritative justification for the things they write about and speak about. They may not understand all those scriptures but they all realize that they are inspired by God and pepper their writings with them in hopes that the inspiration will fall off and dust their own words, uninspired as their own words may be. But thanks for asking --
I'm asking you how do YOU know they're inspired? I believe Scripture is the inspired Word of God, but I have nothing to go on except faith. If you could pick out "inspired Scripture" in a police lineup, what would it look like? Are you saying that there is something that is not apparent to site and touch and requires an ascent of faith?
And if it requires an ascent of faith to believe that:
A) The Bible is inspired, and B) It's not filled with lies,
why do you ridicule the application of faith toward the principals of transubstantiation -- in which the substantive difference is also not apparent to site and touch, but requires as much faith as believing that a book I can find in any fleabag motel room was written by God?