Well, the problem is that the Catholic church did put the bible together in the form that we understand it to be now.
The New Testament was written by the Apostles and the Canon set down by Pope Damasus before the Vulgates were commissioned by the Emperor Theodosius. Over a millennium prior to Luther.
You do know, right, that the Bible existed prior to Luther? In Latin?
“The Catholic church can’t claim that Scripture gives it its authority if it also claims that it gave the world Scripture.”
True, which is why the Catholic church claims that their authority comes from Christ himself, as recorded in scripture, through St. Peter.
Christ gives the Church their authority, not scripture. This is the reason for apostolic succession, the chain of bishops all the way back to St. Peter.
“The only way the Catholic church could claim Scripture gives it its authority is if Scripture is outside the purview of the church, standing alone as its own authority.”
Or they claim something else entirely. :)
That's the one that left out the Deuterocanonical books with which Martin Luther also took issue, isn't it?