"The Hebrews have a saying that God is more delighted in adverbs than in nouns: 'tis not so much the matter that's done, but the matter how 'tis done, that God minds. Not how much, but how well! 'Tis the well doing that meets with the well done. Let us therefore serve God, not nominally or verbally, but adverbilly.'" - Ralph venning, as quoted in Spurgeon's Sermon Notes
Further recommended reading & listening:
The Best of The Daily Spurgeon
The Forgotten Spurgeon, by Iain Murray
A Defense of Calvinism - by Charles Spurgeon