**Prior to Jerome, the books were separate from one another, and when placed together, did not have a consistant canon.***
Not so! While various churches obtained copies of the individual gospels and letters, the first to compile them into one form was the heretic MARCION. His modified Luke’s gospel, and Paul’s letters.
This shook up the Chritian believers so much they began to compile their own.
The un-disputed Christian bible at that time was
The four Gospels, Acts, the Letters of Paul (except Hebrews) 1Peter, 1 John and that was it.
Among the disputed books were finally added years later, James, 2nd Peter, 2&3 John, Jude, Revelation and Hebrews.
Interesting thing, the ROMAN church did not want Hebrews in the Bible, the Greek church did not want Revelation.
They compromised and put in both.
Plus you have books like the Shepherd and the Didache.