“For if God did not [even] spare angels that sinned, but threw them into hell and sent them to pits of gloom to be kept [there] for judgment; and if He did not spare the ancient world, but protected Noah, a preacher of righteousness, with seven others, when He brought [the judgment of] 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 to those who would live ungodly lives thereafter; and if He rescued righteous Lot, who was tormented by the immoral conduct of unprincipled and ungodly men (for that just man, while living among them, felt his righteous soul tormented day after day by what he saw and heard of their lawless acts), then [in light of the fact that all this is true, be sure that] the LORD knows how to rescue the godly from trial, and how to keep the unrighteous under punishment until the day of judgment, and especially those who indulge in the corrupt passions of the sin nature, and despise authority. Presumptuous and reckless, self-willed and arrogant [creatures, despising the majesty of the LORD], they do not tremble when they revile angelic majesties, whereas even angels who are superior in might and power do not bring a reviling (defaming) accusation against them before the LORD.
But these [false teachers], like unreasoning animals, [mere] creatures of instinct, born to be captured and destroyed, reviling things they do not understand, will also perish in their own corruption [in their destroying they will be destroyed],  suffering wrong [destined for punishment] as the wages of doing wrong.
They count it a delight to revel in the daytime [living luxuriously].  They are stains and blemishes [on mankind], reveling in their deceptions even as they feast with you.
They have eyes full of adultery, constantly looking for sin, enticing and luring away unstable souls. Having hearts trained in greed, [they are] children of a curse.
Abandoning the straight road [that is, the right way to live], they have gone astray; they have followed the way of [the false teacher] Balaam the son of Beor, who loved the reward of wickedness;  but he was rebuked for his own transgression: a mute donkey spoke with a man’s voice and restrained the prophet’s madness.
These [false teachers] are springs without water and mists driven by a tempest, for whom is reserved the gloom of black darkness.
For uttering arrogant words of vanity [pompous words disguised to sound scholarly or profound, but meaning nothing and containing no spiritual truth], they beguile and lure using lustful desires, by sensuality, those who barely escape from the ones who live in error.
They promise them liberty, when they themselves are the slaves of depravity — for by whatever anyone is defeated and overcome, to that [person, thing, philosophy, or concept] he is continually enslaved.
For if, after they have escaped the pollutions of the world by [personal] knowledge of our LORD and Savior Jesus Christ, they are again entangled in them and are overcome, their last condition has become worse for them than the first.
For it would have been better for them not to have [personally] known the way of righteousness, than to have known it and then to have turned back from the holy commandment [verbally] handed on to them.
The thing spoken of in the true proverb has happened to them, “The dog returns to his own vomit,” and, “A sow is washed only to wallow [again] in the mire,”   2 Peter 2:4-22 AMP.