1 Enoch 9:6
5 You have created all things, and over all things, You have power: all things are open and visible in Your sight, and You see all things, and nothing can hide from You. 6 You see what Azâzal has done, who has taught all unrighteousness on earth and revealed the eternal secrets that were kept in heaven, which men were eager to learn: 7 And Semjâzâ, to whom You gave authority to lead his companions. 8 And they have gone to the daughters of men on the earth, and have lain with the women, and have defiled themselves, and revealed to them all kinds of sins. 9 And the women have borne giants, and the whole earth has been filled with blood and unrighteousness as a result. 10 And now, behold, the souls of those who are dead are crying and pleading to the gates of heaven, and their lamentations have risen: and cannot stop because of the lawless acts that are committed on the earth.
Irenaeus Against Heresies 1.15
6 With good reason, therefore, and very fittingly, in reference to your rash attempt, has that divine elder and preacher of the truth burst forth in verse against you as follows: Marcus, you former of idols, inspector of portents, Skill'd in consulting the stars, and deep in the black arts of magic, Ever by tricks such as these confirming the doctrines of error, Furnishing signs unto those involved by you in deception, Wonders of power that is utterly severed from God and apostate, Which Satan, your true father, enables you still to accomplish, By means of Azazel, that fallen and yet mighty angel — Thus making you the precursor of his own impious actions. Such are the words of the saintly elder. And I shall endeavour to state the remainder of their mystical system, which runs out to great length, in brief compass, and to bring to the light what has for a long time been concealed. For in this way such things will become easily susceptible of exposure by all.
Notes and References
"... Irenaeus exhibits his familiarity with the angel story in several passages of his Against Heresies. The following were cited above in the first part of the chapter: 1.10.1; 1.15.6; 4.16.2; and 4.36.4. He also mentions it in 'In Demonstration of the Apostolic Preaching 18' ..."
VanderKam, James C. The Jewish Apocalyptic Heritage in Early Christianity (p. 66) Fortress Press, 1993