[stfassisi]

Nor is the Catholic Church responsible for the canon. The canon confirmed what the churches were already practicing.

empty words...

Back that up with the writings of early Christians who where not Catholic ?

[Mr Rogers]

Well, since you consider all Christians to be Catholic, then by YOUR definition, there are no early Christians who were not Catholic.

However, multiple canons were proposed from about 150 AD on, with 22 NT books having almost universal acceptance, and 5 being ‘maybe/maybe not’. As those 5 gained a wider audience, more churches accepted them, and shortly before 400 AD, a regional council adopted 27 books as NT canon. However, several other regions didn’t accept all 27 until much later.

See the table here: http://www.bible-researcher.com/canon5.html

A central tenant of Roman Catholicism is the primacy of the Bishop of Rome, and his authority to set doctrine. That wasn’t established in 400 AD, and when those claims arose later, it drove a variety of regions away from Rome - or, perhaps, split Rome away from them.