Proverbs 25:9 - Ellicott's Commentary On The Whole Bible

Debate thy cause with thy neighbour. — As our Lord says, “If thy brother trespass against thee, go and tell him his fault between thee and him alone” (Matthew 18:15). Or it may mean, “If you must go to law with another, do not drag others into the matter by disclosing their secrets in order to help your cause.