When Jesus explains “You shall not murder” (Matthew 5:21), he says if you treat someone with contempt, calling him or her ‘Raca’ or ‘fool,’ you are violating the principle of the command and are “in danger of the fire of hell” (Matthew 5:22). To modern ears this seems excessive, but behind the sixth commandment is the doctrine of the image of God as expounded in James 3. It is a sin to treat any class or group unequally, as being less worthy of respect, love, and protection.