1 Enoch 8:1
1 And Azâzêl taught men to make swords, and knives, and shields, and breastplates, and made known to them the metals 〈of the earth〉 and the art of working them, and bracelets, and ornaments, and the use of antimony, and the beautifying of the eyelids, and all kinds of costly stones, and all colouring tinctures. 2 And there arose much godlessness, and they committed fornication, and they were led astray, and became corrupt in all their ways. Semjâzâ taught enchantments, and root-cuttings, Armârôs the resolving of enchantments, Barâqîjâl, (taught) astrology, Kôkabêl the constellations, Ezêqêêl the knowledge of the clouds, 〈Araqiêl the signs of the earth, Shamsiêl the signs of the sun〉, and Sariêl the course of the moon. And as men perished, they cried, and their cry went up to heaven . . .
Clement of Alexandria Selections from the Prophets 53:4
Eclogae Propheticae"... Day to day pours forth speech and night to night declares knowledge." ... "Night to Night": All the demons knew that it was the Lord who arose after the passion, for Enoch already said that the angels who transgressed taught humanity astronomy, divination, and the other arts.
Notes and References
"... In Selections from the Prophets 53.4 one encounters another early Christian reference to the angel myth. and again it is attributed to Enoch. The passage is set in a context in which Ps 19:2 is under discussion ... In explanation, Clement notes that the demons have special knowledge ... It is undoubted that Clement has in mind the various arts, enumerated in 1 Enoch 7:1-8:3, which the fallen angels taught to humans. The three categories that he mentions - astronomy, manticism, and the other arts - are not named in those very words and in that precise order in 1 Enoch 7: 1-8:3, but all appear to he there ... So, in this instance, too, an early Christian writer alludes to rather than quotes 1 Enoch, but he gives sufficient information so that the object of the allusion can be identified. The Book of Enoch could, therefore, be used to explain a phrase in a psalm. Also, Clement's use indicates that he regarded the book not as a recent forgery, but as an ancient work. This ancient work was, on this point, a reliable source of information ..."
VanderKam, James C. The Jewish Apocalyptic Heritage in Early Christianity (pp. 45-46) Fortress Press, 1993