NET
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.
Darby
10 But these, whatever things they know not, they speak railingly against; but what even, as the irrational animals, they understand by mere nature, in these things they corrupt themselves.
KJV
10 But these speak evil of those things which they know not: but what they know naturally, as brute beasts, in those things they corrupt themselves.