I've been reading a series of books about Ancient Rome, written in novel form but based on real people, dates and facts, itvhas been very eye opening as it creates a very real backdrop for the Gospels and especially the letters to the congregations.
They're by Steven Saylor, Roma, Empire and Dominus.
Below is a quote from Dominus:
"Reason means nothing when the worshippers are completely reliant on the revelations of the prophet."
Though that would be appreciated here!