Matthew 5:21-22

21Jesus then said, ‘You know the rule that God gave to your ancestors: “You must not kill anyone. Any person who does kill someone will stand in front of a judge. The judge will punish him because he has done a wrong thing.”

22But what I now say to you is this: Anybody who is angry with his brother will have to stand in front of a judge. Or someone might call his brother by a bad name. Then he will have to stand in front of the Jewish leaders. They will judge him. But someone may say to his brother, “You are a fool.” God will judge that person. God may punish him in the fires of hell.