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
Spurgeon, Charles H. (2015). “The Complete Works of Charles Spurgeon, Volume 86: The Sword and the Trowel, Volume 7”, p.420, Delmarva Publications, Inc.