1 Enoch 1:9
8 But with the righteous, He will establish peace. He will protect the chosen, and mercy will be upon them. They will all belong to God, prosper, and be blessed. He will aid them, and light will shine for them, and He will make peace with them. 9 Behold! He comes with tens of thousands of His holy ones to pass judgment upon all, to annihilate all the wicked, to convict every soul of all the godless deeds they have committed, and of all the harsh words that godless sinners have spoken against Him.
Mark 8:38
36 For what benefit is it for a person to gain the whole world, yet forfeit his life? 37 What can a person give in exchange for his life? 38 For if anyone is ashamed of me and my words in this adulterous and sinful generation, the Son of Man will also be ashamed of him when he comes in the glory of his Father with the holy angels.”
Notes and References
"... Verse 9 is noteworthy for its use in early Christianity. Jude 14-15 quotes all but line c, citing the text as a prophecy by 'Enoch, the seventh from Adam' ... 1 Thessalonians 3:13 and Mark 8:38 speak of 'the coming of our Lord Jesus with all his holy ones' and of the Son of Man, who 'comes in the glory of his Father with the holy angels.' Perhaps belief in the parousia of the Son of Man triggered the citation of 1 Enoch 1:9 in Jude or its use in the tradition behind I Thessalonians 3:13. It is perhaps significant that 52:5-9 interprets 1 Enoch 1:37 to refer to the corning of the Anointed and Chosen One ..."
Nickelsburg, George W. E. A Commentary on the Book of 1 Enoch Chapters 1-36, 81-108 (p. 149) Fortress Press, 2001