You're talking canon texts. There are other writings, you know -- some of them earlier than the canon texts. And there certainly was oral tradition passed off in the form of teaching by those who were sent out to do that very thing.
Agreed, we only have a fraction of what once was.
Here's the rub: Paul began his preaching mission about 18 months after Jesus. To whom was he preaching???
Gentiles and Proslytes like himself. Factually Hellenist in the Diaspora.
Pauls Judaism has long been debated with no real credible answers.
We only know Paul started writing 15 years after Jesus death.
To established communities of Christians, before he began to plant churches
To Pater Familias, before he started new Pater Familias.
. That means that churches were established less than a year following Jesus, and these communities were familiar with the stories of Jesus in a fairly corroborative way
That is not all together accurate.
We only know Paul started writing 15 years after Jesus death.
. Someone familiar with Jesus (i.e. "apostles") had to do what they were commissioned to do (go out) and spread the faith, in order for these communities to exist.
False.
Jesus death was factually martyred. His martyrdom found no popularity in Aramaic Jewish communities. It did find popularity in the Diaspora in Hellenistic Proselyte Pater Familias.
This is because the people went home back to the diaspora after Passover with legends and mythology and some theology. Paul did not spread the message, the message was already out there. Paul was simply correcting errors in theology, and adherence or lack of in Gentile communities.
It is these Gentile communities/houses that made up the people tat would become teh gospel authors.
The rub is, Paul was not al that popular or his teaching even well known during this period. In this period he was a minor player who found popularity in time as the movement grew.