Im arguing that if a book or writing contains information or concepts that disagrees with or is in opposition to the 66 books it cant be considered inspired. Sola Scriptura simply states that all doctrine or practices agree with and can be justified by scripture.
So why should your list of 66 books be considered “scripture”? That’s my point. There has to be an objective standard. It can’t just be, “use whichever books you like.
Now if you are arguing that it is self-evident that scripture is the 66 books, I want to hear why.