Catholics VS Protestants Debate Thread

[Drich]

16 All Scripture is inspired by God and profitable for teaching, for reproof, for correction, for training in righteousness;

2 Timothy 3:16 NASB

Well, that's the verse that believers typically trot out to justify Sola Scriptura, but it raises the question of what exactly the author of 2 Timothy had in mind. There was no "Bible" when that was written. How can we know what the author considered inspired Scripture? I doubt he was thinking, "This will all get hashed out in due course and decided on by a vote. Then they'll know."

Well the Author "paul" tells us what scripture is..
(2 Thes 2:15) 14 God chose you to have that salvation. He chose you by using the Good News that we told you. You were chosen so that you can share in the glory of our Lord Jesus Christ. 15 So, brothers and sisters, stand strong and continue to believe the teachings we gave you when we were there and by letter.

From the greek:
2:15  ἄρα οὖν ἀδελφοί στήκετε καὶ κρατεῖτε τὰς παραδόσεις ἃς ἐδιδάχθητε εἴτε διὰ λόγου εἴτε δι’ ἐπιστολῆς ἡμῶν

g3056 λόγος logos =Word. Meaning:
of speech
   a word, uttered by a living voice, embodies a conception or idea
   what someone has said

and the the second word:
g199 ἐπιστολή epistolē =epistle. Meaning:
ἐπιστολή epistolḗ, ep-is-tol-ay'; from G1989; a written message:—"epistle," letter.

Scripture includes the epistles, or the letters according to Paul in 1 Thess 2