34 AD to the ends of the Earth by Lewis Brackett ... a Kindle book.
My 1st century novella about a ship captain who sees Jesus, then tells
people across the Mare Nostrum.

https://www.amazon.com/34-AD-Earth-Captain-Jesus-ebook/dp/B08L44GFR1?asin=B08L44GFR1&revisionId=e2d19464&format=1&depth=1