Book of Enoch (1 Enoch) 89:38
Then that sheep, their leader which had become a man, withdrew from them and fell asleep, and all the sheep sought it and cried over it with a great crying.
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.