What is the difference between a sermon and a mere speech? How can one tell the difference between the two?
In his book on the subject of preaching, Robert L. Dabney (1820-1898) makes the following observation:
“The preacher relies alone upon evangelical inducements, and refers every conviction of the reason ultimately to God’s testimony. I elaborate this all-important distinction carefully; perhaps my reasons for it are difficult to grasp, because of their simplicity. The end, I repeat, of every oration is to make men do. But the things which the sermon would make men do, are only the things of God. Therefore it must apply to them the authority of God. If your discourse urges the hearer merely with excellent reasons and inducements, natural, ethical, social, legal, political, self-interested, philanthropic, if it does not end by bringing their wills under the direct grasp of a “thus saith the Lord,” it is not a sermon; it has degenerated into a speech.” (Evangelical Eloquence, p.34)
Surely Dabney is correct here. At the end of the day, if the force behind a sermon does not reside primarily in the authority of the Word of God (“a thus saith the Lord”, as Dabney puts it above), then it is not truly a sermon at all, but has “degenerated into a speech.”
It may be a fine speech – it may be carefully crafted and articulated; it may even “make men do” something, and so be thought to be effective, but it is not a sermon in the most basic sense of the word, and therefore has no place in the pulpit of a Christian church.
In the preaching in our churches, let us (again, to borrow Dabney’s phrase) rely on evangelical inducements alone, and seek to bring the wills of our hearers under a direct grasp of the truth and authority of the Word of God in Scripture. The Lord’s people need sermons, not speeches.