Book of Enoch (1 Enoch) 62:5
And one portion of them shall look on the other, And they shall be terrified, And they shall be downcast of countenance, And pain shall seize them, When they see that Son of Man Sitting on the throne of his glory.
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.