This is a great look at preaching today, all the way back from from John Calvin, to A.W. Tozer, and on to John MacArthur who is quoted as saying "Worship services in many churches today are like a merry-go-round. You drop a token in the collection box; it is a good ride." For an in-depth look at the history of preaching and what it means for our churches today, check out this article called "The Centrality of Preaching," it is well worth the read.