Bring not a railing judgment, etc… That is, they use no railing, nor cursing sentence; not even in their conflicts with the evil angels. See St. Jude, ver. 9.
2:12. But these men, as irrational beasts, naturally tending to the snare and to destruction, blaspheming those things which they know not, shall perish in their corruption:
2:13. Receiving the reward of their injustice, counting for a pleasure the delights of a day: stains and spots, sporting themselves to excess, rioting in their feasts with you:
The delights of a day: that is, the short delights of this world, in which they place all their happiness.
2:14. Having eyes full of adultery and of sin that ceaseth not: alluring unstable souls: having their heart exercised with covetousness: children of malediction.
2:15. Leaving the right way, they have gone astray, having followed the way of Balaam of Bosor who loved the wages of iniquity,
2:16. But had a check of his madness, the dumb beast used to the yoke, which, speaking with man's voice, forbade the folly of the prophet.
2:17. These are fountains without water and clouds tossed with whirlwinds, to whom the mist of darkness is reserved.
2:18. For, speaking proud words of vanity, they allure by the desires of fleshly riotousness those who for a little while escape, such as converse in error:
2:19. Promising them liberty, whereas they themselves are the slaves of corruption. For by whom a man is overcome, of the same also he is the slave.