Book of Enoch (1 Enoch) 65:11

And these—they have no place of repentance for ever, because they have shown them what was hidden, and they are the damned: but as for thee, my son, the Lord of Spirits knows that thou art pure, and guiltless of this reproach concerning the secrets.

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.