That’s Mr. Sproul’s way of dodging the issue of sola scriptura and church authority, along with the reformers’ taking and putting books back into the Bible. He claims no church has any infallible abilities of faith, so we can pull and put books in all we want.
I heard a talk of his once on the radio and he goes to great lengths to explain this principle, then goes on to try to say why, of all the books in the Bible, the 7 “extra books” that were in the Bible since 397 were not actually inspired (the deutercanonicals), and that the Catholics were wrong on that issue in 397.
Luther took this principle to the extreme in his disregard for James, Jude, Hebrews, and Revelation in putting them in the appendix with the “apocrypha” (deutercanonicals).
The way you do all of this is to say that the authority canonizing the Bible (the Catholic Church) is fallible, but the books inside of it are “infallible” as we an accept their authenticity as inspired. I call this logic “Bible olympics” because you have to jump around a lot in logic and history to reconcile the newfound position of the reformers in the 16th Century.
He went on to say to some effect “but I think it’s clear that God has directed us to put the books in the Bible that are meant to be there” (in context, inferring , of course, the Catholics are still wrong about the “apocrypha.”)
Hope that helps
