2 Peter 2:4; 2 Peter 2:20

4 For if God spared not the angels that sinned , but cast them down to hell , and delivered them into chains of darkness, to be reserved unto judgment;
20 For if after they have escaped the pollutions of the world through the knowledge of the Lord and Saviour Jesus Christ, they are again entangled therein, and overcome , the latter end is worse with them than the beginning.