Sol, Rome had been xtian for 150 years before it fell and in that time it gradually became little more than a facade of its former power. The reasons for its fall (militarily) had little to do with xtians but with decisions made by Constantine before he ever gave that bunch of shitheads any real power. The Eastern Roman Empire lasted for 1,000 years longer and did not fall to "pagan" tribes but to the Ottoman Turks.
Try studying some history instead of wasting your time reading that fucking bible.
Try studying some history instead of wasting your time reading that fucking bible.