The author(s) of the Book of the Watchers (chapters 1–36 of 1 Enoch) saw the punishment of the rebellious Watchers resulting from the intercession of the four archangels. 

In chapter 9, Michael, Sariel (or Uriel), Raphael, and Gabriel brought the complaints of humanity to God and accused Shemihazah, Asael (Azazel), and their colleagues of creating the monstrous Nephilim and teaching humanity forbidden knowledge. 

In response, chapters 10 and 11 describe God’s response: He commissioned Sariel/Uriel to go to Noah and tell him to hide himself and reveal that a global deluge was about to destroy everything on the earth. Raphael was told to bind Asael hand and foot and cast him into an opening in the wilderness of Doudael, covering him with darkness until “the day of the great judgment.” 

This is similar to the punishment of the angels who “left their proper dwelling” in Jude 6, who are “kept in chains under gloomy darkness until the judgment of the great day”—confirming that Jude and Peter (2 Pt. 2:4) were referring to 1 Enoch, since this punishment is not described anywhere in the Old Testament.  

Gabriel was tasked with destroying the half-breed “sons of the Watchers” by stirring up “a war of destruction” among them, which echoes the Gigantomachy of ancient Greek religion. Finally, Michael was sent to bind Shemihazah and his colleagues “for seventy generations in the valleys of the earth… until the everlasting judgment is consummated.” 

Note that in the ancient Near East, “seventy” meant “all of them,” “the complete set,” not a literal number. However many generations there are until the final judgment, that’s how long the rebel Watchers will be imprisoned. 

If you are looking for a text of the Book of 1 Enoch to follow our monthly study, you can try these sources: 

Parallel translations by R. H. Charles (1917) and Richard Laurence (1821)

Modern English translation by George W. E. Nickelsburg and James VanderKam (link to book at Amazon)

Book of 1 Enoch - Standard English Version by Dr. Jay Winter (link opens free PDF)

Book of 1 Enoch - R. H. Charles translation (link opens free PDF) 

The SkyWatchTV store has a special offer on Dr. Michael Heiser’s two-volume set A Companion to the Book of Enoch. Get both books, the R. H. Charles translation of 1 Enoch, and a DVD interview with Mike and Steven Bancarz for a donation of $35 plus shipping and handling. Link: https://bit.ly/heiser-enoch