“I still wonder how you can forge prose. “
Forgery in the day was not copying text per se and taking credit for it, but writing a text and claiming the work was penned by someone else, like an apostle.
If memory serves, this was a common, and not illegitimate, practice in earlier times.
If a follower wrote about the teachings it was in the teacher's name. This is true not just for Christian writers. The weren't concerned with copyright or royalties and it was in humility and for accuracy they credited the teacher.
That a certain scripture under the name of X was written by X's disciple is not a revelation or discredit. There's also a great many writings in world religion that were orally transmitted long before they were committed to writing. Who was the forger then?
This whole point seems to fail in an anachronistic error.