1 Enoch 10:4
4 And again the Lord said to Raphael: 'Bind Azâzêl hand and foot, and cast him into the darkness: and make an opening in the desert, which is in Dûdâêl, and cast him therein. 5 And place upon him rough and jagged rocks, and cover him with darkness, and let him abide there for ever, and cover his face that he may not see light. 6 And on the day of the great judgement he shall be cast into the fire. And heal the earth which the angels have corrupted, and proclaim the healing of the earth, that they may heal the plague, and that all the children of men may not perish through all the secret things that the Watchers have disclosed and have taught their sons. 8 And the whole earth has been corrupted through the works that were taught by Azâzêl: to him ascribe all sin.'
5 But Noah found grace before the eyes of the Lord. 6 And against the angels whom He had sent upon the earth, He was exceedingly wroth, and He gave commandment to root them out of all their dominion, and He bade us to bind them in the depths of the earth, and behold they are bound in the midst of them, and are (kept) separate. 7 And against their sons went forth a command from before His face that they should be smitten with the sword, and be removed from under heaven.
Notes and References
"... An extensive body of Second Temple literature developed elaborate scenarios concerning these rebellious angels. Variously referred to as “spirits,” “sons of heaven,” “giants,” and “watchers,” these supernatural beings were judged in Noah's flood and were thought to be imprisoned until the time of their final judgment (1 Enoch 10:11–12; Jubilees 5:6). In this interpretation, Christ “proclaimed” judgment upon the sons of God after achieving his victory on the cross. ..."
Gregg, Brian Han "1 Peter" in Aune, David Edward, (ed.) The Blackwell Companion to the New Testament (p. 591) Wiley-Blackwell, 2010