Theophylact of Ohrid

Michael, he says, did not endure the blasphemies of the devil against a man, that is, Moses, yet these compose blasphemous speeches against teachings which they do not know; and what they know by natural inclination, confusedly, like irrational animals, they pursue like horses.

Commentary on Jude ↗

Clement of Alexandria

"But these," he says, "speak evil of those things which they know not; but what they know naturally, as brute beasts, in these things they corrupt themselves." He means that they eat, and drink, and indulge in uncleanness, and says that they do other things that are common to them with animals, devoid of reason.

From the Latin Translation of Cassiodorus ↗