▁transmission , ▁still ▁don ' t ▁know ▁why ▁the ▁Q um ran ▁community ▁considered ▁the ▁En och ic ▁texts ▁so ▁important ▁that ▁they ▁possessed ▁and ▁retained ▁so ▁many ▁copies ▁in ▁comparison ▁to ▁other ▁text ual ▁trad itions ▁found ▁there . ▁ ▁The ▁Book ▁of ▁Gi ants ▁is ▁an ▁exp ans ive ▁narr ative ▁of ▁the ▁bib lic al ▁story ▁of ▁the ▁birth ▁of ▁' gi ants ' ▁in ▁Gen esis ▁ 6 . 1 - 4 . ▁In ▁this ▁story , ▁the ▁gi ants ▁came ▁into ▁being ▁when ▁the ▁Watch er ▁' s ons ▁of ▁God ' ▁( who , ▁per ▁the ▁story ' s ▁cor ro bor ative ▁J ub ile es ▁account ▁[ J ub ▁ 4 : 1 5 ; ▁ 5 : 6 ], ▁God ▁originally ▁dispatch ed ▁to ▁earth ▁for ▁the ▁purpose ▁of ▁instruct ing ▁and ▁n urt uring ▁human ity ▁" in ▁proper ▁rit ual ▁and ▁eth ical ▁conduct ," ▁" to ▁do ▁what ▁is ▁just ▁and ▁u pr ight ▁upon ▁the ▁earth ") ▁were ▁s edu ced ▁by ▁and ▁had ▁sexual ▁inter course ▁with ▁mort al ▁women , ▁who ▁then ▁birth ed ▁a ▁hy brid ▁race ▁of ▁gi ants . ▁These ▁Watch ers ▁( gr ig ori ) ▁and ▁gi ants ▁( ne ph il im ) ▁engaged ▁in ▁destruct ive ▁and ▁gross ly ▁imm oral ▁actions ▁which ▁dev ast ated ▁human ity , ▁including ▁the ▁reve aling ▁of ▁heaven ' s ▁holy ▁" se cre ts " ▁or ▁" m yst eries ▁to ▁their ▁w