Book of Enoch (1 Enoch) 69:4
The name of the first Jeqôn: that is, the one who led astray [all] the sons of God, and brought them down to the earth, and led them astray through the daughters of men.
Background and history of Book of Enoch (1 Enoch), and issues with this book.
R. H. Charles, The Book of Enoch (London: SPCK, 1917), public domain. The verse text is the English Wikisource transcription of that translation. Charles’s editorial signs are kept. He rearranges some verses in chapters 5, 39, 90, 91, and 106, so those chapters are not a straight 1, 2, 3 sequence.