Matthew Poole and continuators on Jude 1:8

8 Likewise also these filthy dreamers defile the flesh , despise dominion , and speak evil of dignities .

Notwithstanding so many Judgments of God upon others, which should have kept them from the like Sins.

Either this may be taken properly, and joined to the next clause, defile the Flesh, and then it may note the Impurity of these Wretches who dreamed of what they loved, and acted over that Filthiness in their Sleep, to which they were so much addicted when awake: Or metaphorically, and so they are called Dreamers, as having the Sense of their Minds overcome, and laid asleep by their sensual Pleasures; or being like Men in a Dream, deluded by their absurd, tho pleasing Imaginations.

This notes all those lascivious Practices, to which, like the Sodomites, they had given themselves over, and whereby they defile themselves and others; the Lust of Vncleanness, as it is in Peter.

Not only Governours, but Government itself.

In their Minds, Judgments, Desires, they reject, make voide, and abrogate Civil Government, as a thing not fit to be.

Either spiritual Governour, or rather Civil, called Dignities, because of the honourable Titles given them, and Gifts bestowed on them. See 2 Pet. 2.10.

Marginal references: Exod. 22.28.