Well, the brick wall is “sola scriptura”. Bible alone stunts all conversation or where remotely possible it is limited only to what is in the Bible. At least it did with me.
I was ignorant. I knew nothing of Christianity but the Bible. It was if the Bible gave us the Church. A crock.
The Church gave us the Bible. There was much that was not in the bible and common reason proves that point, as well as Scripture itself.
I recall walking out of an Episcopalian bible study once, when the pastor discussed faith and practices before the printing and common man use of the Bible. It was as if he had let a serpent loose before my eyes. Seriously, I left. Lol!
So, broad ignorance is not very authoritative, regardless of how puffed up one can sound in demonstrating it. That is the problem in a nut shell.
Mormons make the same argument as roman catholics.
However, we do have this from the Bible.
14You, however, continue in the things you have learned and become convinced of, knowing from whom you have learned them, 15and that from childhood you have known the sacred writings which are able to give you the wisdom that leads to salvation through faith which is in Christ Jesus. 16All Scripture is inspired by God and profitable for teaching, for reproof, for correction, for training in righteousness; 17so that the man of God may be adequate, equipped for every good work. 2 Timothy 3:14-17 NASB
The church did not give us the Bible.
God gave it to us.