1 Enoch 20:2
1 And these are the names of the holy angels who watch. 2 Uriel, one of the holy angels, who is over the world and over Tartarus. 3 Raphael, one of the holy angels, who is over the spirits of men. 4 Raguel, one of the holy angels who †takes vengeance on† the world of the luminaries. 5 Michael, one of the holy angels, to wit, he that is set over the best part of mankind ⌈⌈and⌉⌉ over chaos. 6 Saraqâêl, one of the holy angels, who is set over the spirits, who sin in the spirit. 7 Gabriel, one of the holy angels, who is over Paradise and the serpents and the Cherubim. 8 Remiel, one of the holy angels, whom God set over those who rise.
2 Peter 2:4
3 And in their greed they will exploit you with deceptive words. Their condemnation pronounced long ago is not sitting idly by; their destruction is not asleep. 4 For if God did not spare the angels who sinned, but threw them into Tartarus16 and locked them up in chains in utter darkness, to be kept until the judgment, 5 and if he did not spare the ancient world, but did protect Noah, a herald of righteousness, along with seven others, when God brought a flood on an ungodly world, 6 and if he turned to ashes the cities of Sodom and Gomorrah when he condemned them to destruction, having appointed them to serve as an example to future generations of the ungodly,
Notes and References
"... [katatartaroun] means “to cast into Tartarus,” and was almost always used with reference to the early Greek theogonic myths, in which the ancient giants, the Cyclopes and Titans, were imprisoned in Tartarus, the lowest part of the underworld, by Uranos, Kronos and Zeus. They are not used in the Greek version of 1 Enoch; though τάρταρος (“Tartarus”) is used of the place of divine punishment in 1 Enoch 20:2, as elsewhere in Jewish Greek literature (LXX Job 40:20; 41:24; Prov 30:16; Sib. Or. 4:186; Philo, Mos. 2.433) ..."
Heiser, Michael S. A Companion to the Book of Enoch: A Reader’s Commentary, Vol. 1 (pp. 115-116) Defender Publishing, 2019