“Can all of your beliefs be substantiated by teaching from scripture? Mine can.”
No, and I’ll prove it.
Show me where Scripture provides a list of books which are authoritative.
Jesus quoting from them, the apostles writing about the same events and not once has anyone proven anything in them in error. All prophecies have been fulfilled precisely as prophesied. Any earthly entity saying they are authoritative does not make it so but time has proven no errors or contradictions.