Isaiah 6:3
1 In the year of King Uzziah’s death, I saw the Lord seated on a high, elevated throne. The hem of his robe filled the temple. 2 Seraphs stood over him; each one had six wings. With two wings they covered their faces, with two they covered their feet, and they used the remaining two to fly. 3 They called out to one another, “Holy, holy, holy is the Lord of Heaven’s Armies! His majestic splendor fills the entire earth!” 4 The sound of their voices shook the door frames, and the temple was filled with smoke. 5 I said, “Woe to me! I am destroyed, for my lips are contaminated by sin, and I live among people whose lips are contaminated by sin. My eyes have seen the king, the Lord of Heaven’s Armies.”
1 Enoch 39:14
12 For a long time my eyes regarded that place, and I blessed Him and praised Him, saying: 'Blessed is He, and may He be blessed from the beginning and forevermore. 13 And before Him there is no ceasing. He knows before the world was created what is forever and what will be from generation to generation. 14 Those who never sleep bless You: they stand before your glory and bless, praise, and extol, saying: "Holy, holy, holy, is the Lord of Spirits: He fills the earth with spirits."' 15 And here my eyes saw all those who never sleep: they stand before Him and bless and say: 'You are blessed, and blessed be the name of the Lord forever and ever.' 16 And my face was changed; for I could no longer behold.
Notes and References
"... Although verse 12 is a paraphrase of Isaiah 6:3, it is likely that these lines and their context reflect contemporary Jewish liturgy. The verb 'bless' which frames the lines (verses 12, 13) and the baruk formula in verse 13 parallel the juxtaposition of Isaiah 6:3 and Ezekiel 3:12 in two insertions in the early Jewish liturgy ..."
Nickelsburg, George W. E. A Commentary on the Book of 1 Enoch Chapters 37-82 (p. 128) Fortress Press, 2012