Yes, SCripture is God breathed, however St Paul tells us to stand fast to our traditions (God's Holy Tradition).
And you can in no way know what these "traditions" were.
With a proper context for this verse the meaning is made clear.
Obviously, Paul was not saying, ‘Hold to Scripture and some oral component.’ In context, his meaning is much simpler.
When you read the preceding verses, and take into account the context, Paul’s meaning is simple. Paul had preached the gospel to the Thessalonians in person.
He was now writing to them. He has just noted the gospel, and he is saying, ‘Hold to the body of teaching, i.e., the gospel, that I have delivered to you, both in person and by letter.’
The letter, of course, was what we call 1 Thessalonians. The content is the gospel. We are to hold to the faith, the gospel of Jesus Christ, which the Thessalonian believers were privileged to learn, at that unique time of apostolic ministry, both from an apostle (Paul), and from a letter directly from him.
your Word" i.e. God's Word --> as I keep repeating, that is not limited to ONLY scripture.
Offcourse at various times God's Word was first spoken before being written down.
Can you provide any quotes from the Oral Words of God that we know have not been written?
Merely ascribing an anachronistic definition onto the word 'tradition', any time you come across it in scripture, is hardly proof of anything.
In fact if you insist that Paul's "tradition" included purgatory and the marian doctrines, you are dead set against those like Newman who excuse the obvious lack of historical evidence for such doctrine by inventing his development theory.