C. H. Spurgeon had a well-stocked library of Puritan books that contained around 12,000 volumes. However, one rare book was not to be found amongst that valuable collection: Thomas Watson’s Notes on Malachi 3:16-18. With a note of sadness in his voice he said to his College students: ‘This [volume] would be a great find if we could come at it, for Watson is one of the clearest and liveliest of Puritan authors. We fear we shall never see this commentary, for we have tried to obtain it, and tried in vain.’ In this reset and lightly edited edition you can now read the book that was on Spurgeon’s ‘wish-list’! “The Great Gain of Godliness” is Watson’s exposition of Mal. 3:16-18. In it he aims ‘to encourage solid piety and confute the atheists of the world, who imagine there is no gain in godliness.’ This book has all the hallmarks of Thomas Watson’s other writings: a combination of rich spirituality, nourishing doctrine, and sane practical wisdom coupled with fascinating illustrations and a very pleasant style.