Having been raised a Protestant and now marrying a Catholic, I've been thinking about the nothing of "sola scriptura."

The facts about sola scriptura as I see them:

1. The Gospels were probably written by and large after Paul’s epistles. Paul no where makes mention of the Gospels. Therefore, any of Paul’s passages that are taken as proof of sola scriptura cannot be referring to the Gospels.
2. Paul’s letters were not collected into anything canonical during his lifetime, nor were the other epistles. They were circulated from church to church. Therefore, any of Paul’s passages that are used to prove sola scriptura also cannot be referring to any of the pastoral epistles.
3. The Gospels are purportedly reporting what Jesus said — in theory (and in faith), they report what happened before either Paul’s epistles or the Gospels were written. Therefore, anything in the Gospels taken as proof of sola scriptura cannot be applied to the New Testament.
4. The recognition for the need of an authorized list of New Testament books (i.e., canonization) did not emerge until the middle of the second century. The Old Testament canon, however, was handed down from Judaism. That, combined with the above points, means any reference in the New Testament to “Scripture” is a reference to the Old Testament.
5. Because of lack of canonized testimony about Jesus, early Christians based their faith primarily on oral traditions and the Old Testament.

Does this justify the Roman Catholic position on tradition? Certainly not. But it does make headway in showing the Protestant notion of sola scriptura is not Biblically based, nor logical.
Sola scriptura is even more troubling when we think about all the extra-Biblical beliefs and practices that Protestants engage in:

1. Christmas
2. Easter
3. Sunday worship
4. The Trinity
5. Prohibition of polygamy
6. The use of the cross as a Christian symbol
7. Rejection of the Jewish festivals

The Trinity is a special case, because Protestants argue that the Bible does teach that there is a Trinity, it just doesn’t use that term. But Armstrongism, Mormonism, and the Jehovah’s Witnesses show that such a conclusion doesn’t necessarily have to follow — not to mention all the early heresies.