Nephilim, just have to be fallen Angels. says who? Not in the bible. the fallen angels are the ones that fought with satan against God. they were placed in dark and gloomy caves until judgment day where they still are today. The only reason satan is still here is because God wanted to demonstrate his power against him ,letting him know that he could not destroy the creator. A reputation that exceeds all reputations. No prophet of old anywhere in the bible talks about the nephilim being fallen angels. not even in the new testament.