One of the saddest sights, and yet a not uncommon one, is, to see one who has been mightily used of God, but whose usefulness is now wholly gone. One can run back through only recent years and recall, one after another, those through whom multitudes were blessed, but who, yielding to some subtle temptation, have utterly and forever lost their opportunity of service. The same is true of scores in more secluded circles whose lives, spiritually blighted and dwarfed, tell the same sad story.