Worth discussing though, how personal literacy (which is absolutely indispensable to some modern forms of Christianity) would be so completely and thorougly unworkable from the Apostolic Age all the way up through Gutenberg and modern schooling.
We make too many assumptions in our modern era..."chronological snobbery" C. S. Lewis called it.
Of course the verbal transmission of the Word was unworkable through the middle ages.
Indeed.