All that is left that is authentic is the Word.
Would you have said that 2 minutes after Paul had stopped teaching? (I'm sure some did) What difference is made by the passage of time? Either he said things or he did not. Scripture demands that you accept them. This would be a matter of real concern to a true bible-believer. Why are you not searching to discover the authentic apostolic tradition? Why do you deny its vital relevance?
Scripture testifies to the necessity of observing the apostolic oral tradition. You cannot reject the oral tradition without rejecting scripture. You have rejected scripture.
Two reasons:
1. God promised to preserve His Word.
2. God didn't promise to preserve 'apostolic tradition'.
Those two things aside, as honest God-fearing men the Apostles wouldn't have been double-minded writing one thing, preaching the opposite. Whatever their 'tradition', it would have to be aligned with their inspired writings.
Scripture testifies to the necessity of observing the apostolic oral tradition. You cannot reject the oral tradition without rejecting scripture. You have rejected scripture.
Where is this list of apostolic tradition? It doesn't exist, what passes for tradition is whatever the Catholic church says is tradition even when it contravenes God's Word. All information needed to believe Jesus is the Christ and to have life in His Name is contained in the Gospel of John. John 20:30-31. As the Catholic church has levied other requirements for salvation that don't exist in John's Gospel, it preaches another Gospel and is accursed. Making the rest of the argument irrelevant until the Catholic church repents and turns from its sin.