2 Peter 2:12

2:12 But these men, like irrational animals – creatures of instinct, born to be caught and destroyed – do not understand whom they are insulting, and consequently in their destruction they will be destroyed,

Jude 1:10

1:10 But these men do not understand the things they slander, and they are being destroyed by the very things that, like irrational animals, they instinctively comprehend.