John Calvin on Jude 1:10

10. But these speak evil of those things which they know not. He means that they had no taste for anything but what was gross, and as it were beastly, and therefore did not perceive what was worthy of honor; and that yet they added audacity to madness, so that they feared not to condemn things above their comprehension; and that they also labored under another evil — for when like beasts they were carried away to those things which gratified the senses of the body, they observed no moderation, but gorged themselves excessively like the swine which roll themselves in stinking mud. The adverb naturally is set in opposition to reason and judgment for the instinct of nature alone rules in brute animals; but reason ought to govern men and to bridle their appetites.

Jude 11-13

11. Woe unto them! for they have gone in the way of Cain, and ran greedily after the error of Balaam for reward, and perished in the gainsaying of Core.

11. Vae illis, quoniam viam Cain ingressi sunt (Genesis 4:12;) et deceptione mercedis Balaam effusi sunt (Numbers 22:21;) et contradictione Core perierunt (Numbers 26:2.)

12. These are spots in your feasts of charity, when they feast with you, feeding themselves without fear: clouds they are without water, carried about of winds; trees whose fruit withereth, without fruit, twice dead, plucked up by the roots;

12. Hi sunt in fraternis vestris conviviis maculae, inter se (vel vobiscum) convivantes, secure pascentes seipsos; nubes aqua carentes, quae a ventis circum aguntur; arbores autummi emarcidae, et eradicata infrugiferae, bis emortuae, et eradicatae;

13. Raging waves of the sea, foaming out their own shame; wandering stars, to whom is reserved the blackness of darkness for ever.

13. Undae efferatae maris, despumantes sua ipserum dedecora; stelie erraticae, quibus caligo tenebrarum in aeternum servata est.