This kind of bad angelic behaviour could not be tolerated and as a result the grigori were taken from their posts and imprisoned in a layer of heaven. Although they appealed to Enoch to speak on their behalf to God, they remained bound for 70 generations. As for the Nephilim, it has been suggested that one of the main reasons for the great flood, was not only to punish man, but to cleanse the earth of the half-bred creatures created from the union of fallen spirit and flesh.
Enhanced Speed & Agility
Armaros: Taught men the resolving of enchantments.
Araqiel (Arakiel): Taught men the signs of the earth..
Azazel: Taught men to make knives, swords, shields; to devise ornaments, coloring tinctures for the beautifying of women, etc.
Baraqijal (Baraqel): Taught men astrology.
Ezequeel (Ezekeel): Taught men the knowledge of clouds.
Gadreel: Introduced weapons of war to mortals.
Kokabel (Kawkabel, Kakabel): Taught the science of the constellations.
Penemue: Instructed mankind in writing "and thereby many sinned from eternity to eternity and until this day. For man was not created for such a purpose." -Enoch I, 7:8. Penemue also taught children the "bitter and sweet, and the secrets of wisdom."
Sariel: Taught men the course of the moon.
Semjaza (Semyaza): Taught men enchantments, root-cuttings, etc.
Shamshiel: Taught men the signs of the sun.