Now faith will totter if the authority of Scripture begin to shake. And then, if faith totter, love itself will grow cold. For if a man has fallen from faith, he must necessarily also fall from love; for he cannot love what he does not believe to exist. But if he both believes and loves, then through good works, and through diligent attention to the precepts of morality, he comes to hope also that he shall attain the object of his love. And so these are the three things to which all knowledge and all prophecy are subservient: faith, hope, love.