Again... I should have been more specific.
Without a single miracle, sermon, or their accounts in the Gospels.
If Jesus’ miracles and sermons are of such little import... why go to the trouble of documenting and sharing them via Matthew, Mark, Luke & John?
Just thought of another "miracle" Mary might have witnessed - Roman Catholicism teaches she was born without sin and remained sinless throughout her natural life. Don't you think everyone who knew her would have realized what a miracle that was? Ever deal with a two-year old, or a preteen? Funny, how nobody expects a kid to be perfectly sinless - surely someone would have thought that was a big deal and would have written something about this special girl who NEVER did anything wrong, don't you think? Surely her parents and siblings would have noted her exceptional holiness and perfect sinlessness - after all, NOBODY had ever seen it before. Wouldn't THAT count as a miracle?