After the flood, did all the Nephilim die? What about the mention of "giants" in the story of Joshua and the spies?
The Bible says that all those outside the ark of Noah perished in the flood:
Therefore, all of the Nephilim died. Furthermore, the Bible testifies that only those on the ark were righteous by faith, and that all the ungodly on earth – including the disobedient angels (i.e., the Nephelim) – were cast into Hell:
Therefore, all Nephelim were condemned to the Abyss and await their final judgment there. None survived the flood.