Its true the works of the 12 apostles excluding Judas (Replaced by Mary MAG.) ARE incomplete in the Bible . AS The Roman ceasar setup the council he also helped(LOL) which books went into the Bible. ( On his deathbed Ceasar excepted Christ, A bit late I would say. But The Church needed ceasar and they held him up high(LOL)
http://en.wikipedia.org/wiki/First_Council_of_Nicaea
Even tho incomplete and filled with dogma. The good WORD still rest in the Bible and other places.
As for how faith based works . It goes something like this.
THE first to die will be the last . The last to die shall be the first. Meaning the further you are removed from the trueth and still hang onto FAITH . The better place you get in heaven. This in itself may seem small . But its anything but. Would it be hard to except GoD for some here. If you walked and talked with Christ. Seen him do mircles . Seen Christ after his death. and resurrection . Or if God talked to you like he did Adam or Moses., No it would be much hardier than not having heard with your own ears or seen with your own eyes
To ans . somewhat why no early writings. Tell me OP how many years after Christ was death did they quit murdering his followers.
OP should also keep in mind who it was Christ came her to save. It wasn't Ceasar or any well to do types . Christ came for the Poor of spirit , Christ came to set us free from the blood sacrifice. The majority of the people Christ came for couldn't read or write.
Back in the time period the OP talks about . Drawing a simple Fish in the sand . Could be enough to make you a lions meal. We know that the persection of christians of the time happened.
Christians didn't become killers until after the above council. When Rome replaced Christ.(With Saul/Paul)