1 Enoch 46:1
1 And there I saw One who had a head of days, and His hair was white like wool. With Him was another being whose countenance resembled that of a man, and his face was full of graciousness, like one of the holy angels. 2 And I asked the angel who accompanied me and showed me all the hidden things, about that Son of Man, who he was, where he was from, and why he accompanied the Head of Days? The angel answered and said to me: 'This is the Son of Man who possesses righteousness, with whom righteousness dwells, and who reveals all the hidden treasures, because the Lord of Spirits has chosen him, and his status is foremost before the Lord of Spirits in uprightness forever.'
Acts 6:15
13 They brought forward false witnesses who said, “This man does not stop saying things against this holy place and the law. 14 For we have heard him saying that Jesus the Nazarene will destroy this place and change the customs that Moses handed down to us.” 15 All who were sitting in the council looked intently at Stephen and saw his face was like the face of an angel.
Notes and References
"... In conclusion, we must again draw our attention to the account of Enoch’s glorified face, as it is found in the first chapter of the Slavonic apocalypse. It is possible that this transformational account was designed by its authors not only to proleptically anticipate the seer’s glorious metamorphosis before the fearful face, but also to anticipate the eschatological transformation of the righteous (Such proleptic glorifications that anticipate the future glorious transformation of the seer can be found in some Jewish and Christian accounts, including the metamorphosis of Stephen in Acts 6:15) ..."
Orlov, Andrei A. Demons of Change: Antagonism and Apotheosis in Jewish and Christian Apocalypticism (p. 154) State University of New York Press, 2020