William Burkitt on 2 Peter 2:10

As if the apostle had said, "Though God reserves all wicked men to punishment, yet especially heretics and seducers, who second their corrupt doctrine with a wicked conversation, wuch as walk after the flesh in the lust of uncleanness."

Here note, That heretics are frequently unclean persons, monstrous opinions and vile affections accompany one another; such as oppose the faith are flesh-defilers.

Note farther, That seducers are opposers of civil government and dominion, they despise government, and are not afraid to speak evil of dignities. Some think the dignities here intended were the angels, others the apostles, but most understand it of civil rulers: it is a very heinous sin in the sight of God to despise government, and oppose rulers.