But even more than its necessity life teaches us its virtue. Vicarious suffering is not a curse. It is Service--Service for God. It proves a power where every other moral force has failed. By it men are redeemed, on whom justice and their proper punishment have been able to effect nothing. Why this should be is very intelligible. We are not so capable of measuring the physical or moral results of our actions upon our own characters or in our own fortunes as we are upon the lives of others; nor do we so awaken to the guilt and heinousness of our sin as when it reaches and implicates lives, which were not partners with us in it. Moreover, while a man's punishment is apt to give him an excuse for saying, I have expiated my sin myself, and so to leave him self-satisfied and with nothing for which to be grateful or obliged to a higher will; or while it may make him reckless or plunge him into despair; so, on the contrary, when he recognises that others feel the pain of his sin and have come under its weight, then shame is quickly born within him, and pity and every other passion that can melt a hard heart. If, moreover, the others who bear his sin do so voluntarily and for love's sake, then how quickly on the back of shame and pity does gratitude rise, and the sense of debt and of constraint to their will! For all these very intelligible reasons, vicarious suffering has been a powerful redemptive force in the experience of the race. Both the fact of its beneficence and the moral reasons for this are clear enough to lift us above a question, which sometimes gives trouble regarding it,--the question of its justice. Such a question is futile about any service for man, which succeeds as this does where all others have failed, and which proves itself so much in harmony with man's moral nature. But the last shred of objection to the justice of vicarious suffering is surely removed when the sufferer is voluntary as well as vicarious. And, in truth, human experience feels that it has found its highest and its holiest fact in the love that, being innocent itself, stoops to bear its fellows' sins,--not only the anxiety and reproach of them, but even the cost and the curse of them. _Greater love hath no man than this, that a man lay down his life for his friends_; and greater Service can no man do to man, than to serve them in this way.