Charles Spurgeon Commentary Jude 1:16

"These are murmurers, complainers, walking after their lusts (and their mouth speaketh great swelling [words]), showing respect of persons for the sake of advantage." — Jude 1:16 (ASV)

These are murmurers, complainers,

You know the sort of people alluded to here; nothing ever satisfies them. They are discontented even with the gospel. The bread of heaven must be cut into three pieces and served on dainty napkins, or else they cannot eat it; and very soon their soul loathes even this light bread.

There is no way by which a Christian man can serve God so as to please them. They will pick holes in every preacher's coat; and if the great High Priest himself were here, they would find fault with the color of the stones of his breastplate.