Jude 1:16

‘These are murmurers, complainers, walking after their lusts (and their mouth speaks great swelling words), showing respect of persons for the sake of advantage.'

He closes off the passage with another list of their failings. They are murmerers and complainers, they follow eagerly their own lusts and desires, their mouths speak great swelling words, and their behaviour towards people depends on what they think that they can get out of them. His words are descriptive of far too many so-called Christians today.

‘Murmurers.' The word used here is not found elsewhere in the New Testament but the idea occurs constantly. See for example Matthew 20:11; Luke 5:30; John 6:41; John 6:43; John 6:61; Joh 8:32; 1 Corinthians 10:10, and compare John 7:12; Acts 6:1; Philippians 2:14; 1 Peter 4:9. The sense is that of repining or complaining at what God ordains, or finding fault with God's plans, and purposes, and doings. Murmurers are never happy with things because they have no faith in God's outworkings.

‘Complainers.' Those who are always complaining at their own lot and are never satisfied. They are in total contrast to those who give thanks for everything (Ephesians 5:20; Philippians 4:6; Colossians 1:12; Colossians 4:2).