Some times it is better to keep your mouth shut. When you are angry. When you lack all the facts. If your words may offend. If tempted to joke about sin. If tempted to make light of holy things. If the issue is none of your business. If your words would make you ashamed later. If you would damage the reputation of the guiltless. When you are feeling critical. When you have already spoken once. When it is time to listen.