If we test/verify everything by Scripture, how do we verify the list of canonical books using Scripture alone? To ask it another way: Since the table of contents in our Bible is not inspired, it must be what Protestants would call a man-made tradition that must be tested by the light of Scripture. But what purely Scriptural test can we perform on that table of contents to determine that the books listed there belong in the Bible? If we cannot verify it using Scripture alone but must go outside the Bible to verify it, aren’t we just accepting a “man-made tradition” as infallible without Scriptural proof?