Authors:

It is a very solemn delusion when ministers think they are prospering, and yet do not hear of conversions.

Charles Haddon Spurgeon (1988). “Spurgeon at His Best: Over 2200 Striking Quotations from the World's Most Exhaustive and Widely-read Sermon Series”, Baker Publishing Group
It is a very solemn delusion when ministers think they are prospering, and yet do not hear of conversions.