The Gospels are actually OT ( written before the church was founded) Jesus taught from the scriptures that told of His coming and they were sufficient for salvation.
Jesus did not HAVE to write scripture, He did not come to write scripture. That would be the work of another of the trinity, the Holy Spirit. Jesus came to be the propitiation for the sins of men, not to write a book.
The fact He did not PHYSICALLY write the scriptures does not mean they are not the inspired word of God
Jesus believed in teaching through people both good and bad. He selected Apostles and told them to teach. He established an Apostolic succession with Peter as the head. It still is what it was and the gates of hell will not prevail against it.
Please show us where Jesus established "apostolic succession" . Please show us where Jesus told anyone the gifts he gave them were transferable to others.
Teach wanted to teach through people not books. Others come and go but Peter the Rock continues. Don't kick against the goad.
The Gospels are actually OT ( written before the church was founded)
How so? Most people would say the church was founded at Pentecost.