to me the nephilim come from planet rahab which is now planet X
in the hebrew untranslated bible before genesis it states that there was life on mars earth the moon and rahab rahab is where lucifer was he made himself to be worshipped as god and shadowd the real god from public view one world religion language and government and his people rebelled against the real god well god took and cast rahab out of the solor system and wiped out the other civilizations and recreated earth to what it is now
thats the nephilim to me i do believe they are also refered to 'giants' in the bible also
