Jude 1:10

But these speak evil of those things which they know not; the same as 2 Peter 2:12; unless this be more generally to be understood of all those spiritual things whereof they were ignorant. But what they know naturally; without reason or judgment. In those things they corrupt themselves; debauch and degrade their natures by extreme sensualities, whereby they bring destruction upon themselves: see 2 Peter 2:12.