The Apostle Peter
2 Peter 2:12BSB·traditional attribution

These men are like irrational animals, creatures of instinct, born to be captured and destroyed. They blaspheme in matters they do not understand, and like such creatures, they too will be destroyed.

John Calvin Reformed @genevareformer

12. But these. He proceeds with what he had begun to say respecting impious and wicked corrupters. And, first, he condemns their loose manners and the obscene wickedness of their whole life; and then he says that they were audacious and perverse, so that by their scurrilous garrulity they insinuated themselves into the favor of many.

Matthew Henry Presbyterian @wholebiblehenry

The apostle's design being to warn us of, and arm us against, seducers, he now returns to discourse more particularly of them, and give us an account of their character and conduct, which abundantly justifies the righteous Judge of the world in reserving them in an especial manner for the most severe and heavy doom, as Cain is taken under special protection that he might be kept for uncommon vengeance.

Commenting on 2 Peter 2:10-22

John Gill Reformed Baptist @doctorgill

But these, as natural brute beasts,.... So far are these men from acting like the angels, that they are sunk below their own species, and are like beasts, and become brutish in their knowledge and behaviour; are like the horse and the mule, without understanding, act as if they were without reason; yea, are more stupid and senseless than the ox, or the ass, which...