I think any actual Christian,who wishes to consider him/herself a Christian,
of any Christian denomination has to accept the NT in order for him/her to
even consider themselves to be a Christian.
Because a Christian is nothing but a follower/believer of the long awaited
Messiah,Christ and Savior Jesus.
His miraculous birth,his message and teachings,numerous miracles,his
death,resurrection, and ascension into heaven.
In fact,if it weren´t for Christ´s arrival,there´d not be one Christian alive,or
a religion called Christianity.
And since all Scripture is inspired of God,written by men or not,that would
be like denying the Holy Spirit itself.
Now as for the others,these are just letters of Christ´s apostles,including
Paul,throughout their journeys when Jesus sent them on their way.
And especially those of Paul.
This guy,not only because of his background,but he seemed to literally go
everywhere in the Mediterranean region,and not only the Middle Eastern one.
Turkey,Cyprus,Greece,Macedonia,Rome,Istrea,Spain,you name it he,or
else someone he knew was actually there.
Be it Barnabas,Timothy,etc.
And on top of it all,his having to endure hardships and sufferings along the way.
I suggest that when people would not only skim over the apostles writings,
but through prayer and meditation/pondering on that what was read,as to grasp
their real meaning,they would come to the conclusion these books too are of vital
importance to a Christian,and learn to appreciate them.
Because what was prophesied in them thousands of years ago,is actually going
on around us,in our time today.
If that be so,how were they to know were they not written with help of the Holy
Spirit.
And Revelations?.
Sure that may have written by John on the island of Patmos,but was revealed to
him by none other than Jesus Christ himself.
.