In other words you cannot prove your lie concerning the Council of Jamnia, and instead of admitting this fact have appealed to the LXX, which was first translated before the Maccabees's were written.

The History of the Septuagint, and its Terminology

THE SEPTUAGINT, derived from the Latin word for "seventy," can be a confusing term, since it ideally refers to the third-century BCE translation of the Hebrew Scriptures into Greek in Alexandria, Egypt. There is a complicated story, however, behind the translation and the various stages, amplifications, and modifications to the collection we now call the Septuagint.

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Philo of Alexandria (fl. 1st c CE) confirms that only the Torah was commissioned to be translated, and some modern scholars have concurred, noting a kind of consistency in the translation style of the Greek Penteteuch. Over the course of the three centuries following Ptolemy's project, however, other books of the Hebrew Scriptures were translated into Greek. It is not altogether clear which book was translated when, and in what locale. It seems that sometimes a Hebrew book was translated more than once, or that a particular Greek translation was revised. In other cases, a work was composed afresh in Greek, yet was included in subsequent collections of the Scriptures. By observing technical terms and translation styles, by comparing the Greek versions to the Dead Sea Scrolls, and by comparing them to Hellenistic literature, scholars are in the process of stitching together an elusive history of the translations that eventually found their way into collections.
http://www.kalvesmaki.com/LXX/

The Catholic Church insists that its many traditions were handed down from the apostles, but when one takes the time to study the early church councils we find that there was a lot of political machinations over your "traditions". The Marian doctrines, the Papacy, transubstantiation, praying to the physically dead, and etc. were all developed by church councils without a single reference to "apostolic authority". The fact is the Patriarchies of Alexandria and Constantinople rejected the supremacy of the Bishop of Rome.

What is my Scriptural proof concerning the Scriptures? Romans for one, and the Lord's quotation from the Scriptures is another:

John 10:34-35
34 Jesus answered them, "Has it not been written in your Law, 'I said, you are gods'? 35 "If he called them gods, to whom the word of God came (and the Scripture cannot be broken),
NAS

Other than Luke (all of whose sources were Jews) the entire NT was given to us through Jews.

You keep referring to Luther, yet either you are ignorant of the early debates over the canon or have chosen to ignore those debates:

OT Apocrypha
That there was disagreement about the status of these writings from early times is evident in the literature. In the 4th century, Athanasius, Cyril of Jerusalem and Jerome are among those who rejected them as not part of the canon of faith, the latter expressly stating that the Church reads these books 'for example and instruction of manners' but does not 'apply them to establish any doctrine.' Augustine accepted them as did certain local councils (Rome AD 382, Hippo 393, Carthage 397). John of Damascus (675-749), rejected them and is followed by the Larger Catechism of the Eastern Orthodox of 1839. What we can say is that they were canon for edification by all, but not all held them to be canon for faith since not all regarded them as Scripture. But to cut a long story short, what was characteristic of the Middle Ages was, as R. A. Muller says, 'the affirmation of the infallible and sufficient character of Scripture in the context of a rather loosely defined canon'.[2]
http://www.reformedreader.org/ssss.htm

What traditions did Paul pass on to others?

Galatians 1:13-14
13 For you have heard of my former manner of life in Judaism, how I used to persecute the church of God beyond measure, and tried to destroy it; 14 and I was advancing in Judaism beyond many of my contemporaries among my countrymen, being more extremely zealous for my ancestral traditions.
NAS

The 1st century church was composed of traditional Jews as well as gentiles, which is why Paul had Timothy circumcised.

I will repeat, I am not comparing myself to Paul, there are many Christians whose lives paralleled Paul's early life whose lives were changed by God's truth.

The Catholic Church's "holy traditions" are the traditions of men.