2 Peter 2:3-6

and in their greed they will exploit you with false words; their judgment from long ago is not idle, and their destruction is not asleep. For if God did not spare angels when they sinned, but cast them into hell and committed them to pits of darkness, held for judgment; and did not spare the ancient world, but protected Noah, a preacher of righteousness, with seven others, when He brought a flood upon the world of the ungodly; and if He condemned the cities of Sodom and Gomorrah to destruction by reducing them to ashes, having made them an example of what is coming for the ungodly