Jude 1:16 - Matthew Poole's English Annotations on the Holy Bible

Murmurers, complainers; either these two words signify the same thing; or murmurers may be meant with relation to God's decrees, laws, providences, and his ordinations in the church or state, 1 Corinthians 10:10; and complainers, with respect to their own condition, with which they were discontented. Walking after their own lusts; minding neither the law of God nor man, but making their lusts their law, and being wholly subject to them, led by them, 2 Peter 2:10. And their mouth speaketh great swelling words: though they were mere slaves to their own lusts, yet they would speak big, and use high and exotic strains in their language, that they might be applauded and admired: see 2 Peter 2:18. Having men's persons in admiration because of advantage; flattering and magnifying the greater and richer sort of men, not considering what they were, so they could gain them to their party, or get gain by them.