Dull hearts make dull preachers. But I must also say that dull ears can ruin the best of sermons. And dull ears are outgrowths of dull hearts also. There is nothing more devastating to a Sunday than putting both of them together. You might as well be living with Cain in the land of Nod. The preacher blows arid desert air on the people, and the people flap their eyelids shut, the dust of indifference circling up from their nodding heads.