Book of Enoch (1 Enoch) 12:1
Before these things Enoch was hidden, and no one of the children of men knew where he was hidden, and where he abode, and what had become of him.
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.