>>12758760afaik nephelim is the resulting progeny of "watchers" (fallen angels) and human women
mind you, there were also "God's people" and population of "other people" outside of genealogy of Adam, presumably other hominid species and two started to intermingle specifically from Cain
because he was exiled, he fucked off somewhere and described to "take himself a wife", suggesting she was from that other tribe/species of hominid
apparently angels fucking humans were okay but mixing humans with other hominids was a no-no so angels either caused the flood or just conveniently kept silent about it and let the genetically contaminated population drown
but a compassionate one among them blabbed, the Serpent or Loki or Enki or whatever he's called in the mythology and apparently more humans (and hominids) survived the cataclysm than was expected
in gratitude for saving them, they started a cult that revered the compassionate angel, known simply as Snake Cult or Snake house
unfortunately homies of Snake didn't like humans handling muh secret knowledge so they infiltrated, subverted & fractured the cult resulting in countless competing factions\cults all fighting for scraps of "divine knowledge" from ancient times through space race to the moon into our Black Mirror future
and that's how you got here, on anonymous Paraguayan clay-pot glazing internet forum