I'd like to hear nonbelievers thoughts on this...
since it is a historical fact (verified independently outside of the bible) that Christianity had spread throughout the Roman empire by 60AD, to the extent that, both in geography and in number, it was recognizable to the authorities. (In fact, the book of Acts not only describes in accurate detail the geography, places, names of the 1st Century Mediterranean world, it also accurately describes the breath of Christianity up to 60AD.)...
The Roman Empire was a wee bit bigger that what's mentioned there.
No.
