To play the "devil's advocate", I would like you to be aware that the idea that the Apostles writings are "Scriptures" is self-serving. Absolute truth? You are exaggerating. You base your claims on the trustworthiness of men 2000 years ago. That is subject to a proclamation of FAITH! Has God made an unequivocal statement to the entire world that the Christian Bible is Sacred Scriptures and absolute truth? Again, that is a matter of faith.
As to similar writings written during the Apostolic Age, there are a number of contradictory writings - John's epistle mentions the Gnostic teachings. So does Colossians and Revelation. How do you KNOW that some of these writings were not inspired by God? How do you KNOW that what we have is EVERYTHING God inspired?
With this information, we must trust the writers of what we now call Scripture got it right. Thus, in the end, we rely on the witness of the Church. Any other explanation is wishful thinking.
Regards
NO!
I rely on the witness of Holy Spirit with my spirit.
God's training course insures that with those WHO TRULY SEEK HIM FIRST AND FOREMOST AND ALWAYS
. . . such inner witness will be perceived increasingly accurately.
Which . . . is clearly God's goal.
NOT
that an edifice, organization and/or leaders be placed between Christ's Bride and Christ on honeymoon night.
This is not rocket science, folks.
Christ was persistently simple and clear when the pharisees assaulted Him
WITH . . . drum roll . . .
all kinds of . . .
!!!!TRADITION!!!!
and customs and laws and logic etc. etc. etc. etc. and etc.