1 Enoch 6:1-8
1And it came to pass, when the sons of men had multiplied in those days, that beautiful and comely daughters were born to them.
2And the Watchers, the sons of the heavens, saw them and desired them, and they said to one another, 'Come, let us choose for ourselves wives from among the daughters of men,
3and let us beget children for ourselves.' And Semyaza, who was their chief, said to them, 'I fear that perhaps
4you will not consent that this deed be done, and I alone shall become the one who pays the penalty for this great sin.' And they all answered him and said, 'Let us all swear an oath, and let us all bind one another with curses that
5we shall not turn aside from this plan, but shall carry out this plan as a deed.' Then they all swore together and bound themselves all
6to one another by it. And they were altogether two hundred. And they descended upon Ardis, which is the summit of Mount Hermon; and they called it Mount Hermon because they swore upon it
7and bound themselves with curses to one another. And these are the names of their chiefs: Semyaza, who was their leader; Urakibaramel, Akibeel, Tamiel, Ramuel, Danel, Ezeqeel, Saraquyal,
8Azazel, Armaros, Batreal, Ananel, Zaqebe, Samsapeel, Sartael, Turael, Jomjael, Arazyal. These are the chiefs of the two hundred Watchers, and all the others were with them.