Anyone engaging Catholics or Orthodox on these threads should realize that "where is that in Scripture?" is not the trump card in thes discussions. Keep in mind that neither the original Church nor the Bible itself teaches that the Bible is the sole rule of faith.
The Bible denies that it is sufficient as the complete rule of faith. Paul says that much Christian teaching is to be found in the tradition which is handed down by word of mouth (2 Tim. 2:2). He instructs us to "stand firm and hold to the traditions which you were taught by us, either by word of mouth or by letter" (2 Thess. 2:15).
You are, of course, misrepresenting those passages badly. Paul doesn't say, and Scripture doesn't say, that anything we need to know is outside the Canon and would always be outside the Canon. Remember that when Paul wrote the Gospels weren't written yet, but now they have been written (a rather significant difference).