[Experience] is the only thing that teaches us the articles of our creed in a way worth learning them. Every one of us carries professed beliefs, which lie there inoperative, bedridden, in the hospital and dormitory of our souls, until some great necessity or sudden circumstance comes that flings a beam of light upon them, and then they start and waken. We do not know the use of the sword until we are in battle. Until the shipwreck comes, no man puts on the lifebelt in his cabin. Every one of us has large tracts of Christian truth which we think we most surely believe, but which need experience to quicken them, and need us to grow up into the possession of them. Of all our teachers who turn beliefs assented to into beliefs really believed none is so mighty as sorrow; for that makes a man lay a firm hold on the deep things of God’s Word.