Ultimately, of course, the effectiveness of preaching is the work of the Spirit. The most expertly crafted and powerfully delivered sermon imaginable will accomplish nothing if He does not act to persuade and enable the hearer to respond to the truth. But at the same time, we must also remember that the Spirit does not act in a vacuum. Ordinarily, He uses means, and preaching which employs all the rhetorical devices within the preacher’s ability is one of those means.