"I make the claims and arguments I make about infallibility because I believe them to be true and sound. If you think something I have said is false or unsound, please show it to be false or unsound."
Prove Bryan's "argument" about infallibility is unsound:
1. There is no OT precedent of infallibility. (From Scripture, which Bryan does not dispute)
2. The burden of proof is that Bryan proves infallibility in the NT church. (From 1 and def. of fallacious argument from silence)
3. Bryan has yet to put forth a proof for NT infallibility, only assertions. (Observation)
4. Bryan's shifting of onus to a demand that one must prove infallibility wrong is nothing more than a fallacious argument from silence and, therefore, to be considered invalid. (From 2 and 3)
5. Invalid arguments are always unsound. (def. of valid and sound arguments)
6. Bryan's argument is unsound. (From 4 and 5)
Bryan has been repeatedly asked to produce an argument that begins with Peter as the "the rock" and concludes with a perpetual, infallible magisterium located in Rome. Maybe one day he'll take up the challenge or else abandon the claim.