throwing stones?

To the crowd wanting to stone a woman caught in adultery I said let he who is without sin cast the first stone. Do you take this to be a universal principle or intended for this incident only? You normally think of my pronouncements as being universal, and in a literal sense you should not throw rocks at people. Yet taken in a broader sense, who then can give correction at all? Those who are too eager are automatically disqualified, yet I have placed some in spiritual authority for whom this is a duty. It is a fearful thing for anyone to bring correction to my children but if your motive is love from a broken heart I may allow you to steer others back to the path of righteousness.