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 . . .

Date: 200-50 B.C.E.
* Dates are based on scholarly estimates

Clement of Alexandria Stromata 5.1

To which also we shall add, that the angels who had obtained the superior rank, having sunk into pleasures, told to the women the secrets which had come to their knowledge; while the rest of the angels concealed them, or rather, kept them against the coming of the Lord. Thence emanated the doctrine of providence, and the revelation of high things; and prophecy having already been imparted to the philosophers of the Greeks, the treatment of dogma arose among the philosophers, sometimes true when they hit the mark, and sometimes erroneous, when they comprehended not the secret of the prophetic allegory.

Date: 195 C.E.
* Dates are based on scholarly estimates