1 Enoch 19:1
1 And Uriel said to me: 'Here shall stand the angels who have united with women, and their spirits, taking many different forms, are corrupting mankind and leading them astray to worship demons as gods. Here they shall remain until the day of the great judgment when they will be judged and brought to an end. 2 And the women of the angels who went astray will become sirens.'
Jubilees 1:10
10 And they will make to themselves high places and groves and graven images, and they will worship, each his own (graven image), so as to go astray, and they will sacrifice their children to demons, and to all the works of the error of their hearts. 11 And I will send witnesses unto them, that I may witness against them, but they will not hear, and will slay the witnesses also, and they will persecute those who seek the law, and they will abrogate and change everything so as to work evil before My eyes.
Notes and References
"... Jubilees may be alluding to the covenants God established with Israel’s ancestors and which—according to Jubilees—were the basis for such later festivals as Weeks and Booths. The sins that are listed next, making high places and [sacred] groves are stereotypical sins mentioned in Scripture (Deuteronomy 16:21; 23:25); it seems unlikely that these were a real problem in Jubilees’ day. The same is true of child sacrifice to the demons (mentioned in Deuteronomy 32:17) a practice which had likely ceased in Israel long before the time of Jubilees; compare 1 Enoch 19:1 ..."
Kugel, James L. A Walk through Jubilees: Studies in the Book of Jubilees and the World of Its Creation (p. 23) Brill, 2012