Successful preaching is, by manifestation of the truth accompanied by the demonstration of the Spirit. The failure of many preachers arises from their dependence solely on the saving efficacy of the truth without the Spirit's office to make it real. There is a legend that the eloquent head of a monastery died, and that while his body was lying in state before burial one of Satan's imps took possession of the corpse, raised it to seeming life, and preached an orthodox sermon through the lips of the dead abbot. The evil spirit returned to pandemonium and boasted of his exploit. When asked by Satan whether he did not run the risk of converting some soul by his orthodox sermon he replied: "Sire, do you not well know that orthodoxy without the unction of the Spirit never saves, but always damns?" John Wesley asserts that an impenitent man may be as orthodox as the devil, who believes and trembles, but is not improved in character by his faith and his fear.
— The Gospel of the Comforter (1898). Chapter 1