preaching. Who would not like to know the power of a Spurgeon, who moved his congregations to deep contrition, or the power of a Jonathan Edwards, whose sermon, “Sinners in the Hands of an Angry God,” left people clinging to the back of pews lest they fall into hell? Who would not covet the power of a Whitfield, whose last congregation followed him to the stairs of his house at Newburyport to hear him preach until the candle burned low in his hand? Who would not desire the power of a John Wesley,