Matthew 5:21–22: Calling Someone a Fool
Jesus does not relax the command against murder; he traces it back to the anger and contempt that precede it. Contemptuous words spoken to a brother are a heart problem with eternal stakes.
Matthew 5:22: Calling Someone a Fool
Jesus traces murder back to the anger and contempt that precede it, so calling a brother a fool is not a harmless slip. The answer is not a stricter tongue but a righteousness we cannot produce ourselves.