Secrets of Enoch (2 Enoch, Slavonic Enoch) 50:4
And when you might have vengeance do not repay, either your neighbour or your enemy. For God will repay as your avenger in the day of the great judgement. Let it not be for you to take vengeance.
Background and history of Secrets of Enoch (2 Enoch, Slavonic Enoch), and issues with this book.
W. R. Morfill’s translation from the Slavonic, edited with introduction, notes, and indices by R. H. Charles, The Book of the Secrets of Enoch (Oxford: Clarendon Press, 1896). Public domain in the United States. Morfill died in 1909 and Charles died in 1931, so the book is in the public domain in the United Kingdom. The verses are transcribed from the Internet Archive scan bookofsecretsofe00morf. Charles’s footnotes, exegetical notes, and bracketed section headings are left out. Charles prints the longer A text and gives B and Sokolov’s manuscript in his notes. Square brackets inside verses are his.