With an awesome name like Obadiah Sedgwick its surprising that few people have heard of him. One particular work of his that I have found beneficial is Anatomy of Secret Sins . This book is a 382 page exposition of Psalm 19:12-13. Yes, 382 pages on these two verses.
12 Who can discern his errors?
Declare me innocent from hidden faults.
13 Keep back your servant also from presumptuous sins;
let them not have dominion over me!
Then I shall be blameless,
and innocent of great transgression.
One particular gem is his explanation of “persons who are truly holy desire still further measure of holiness.” I’ll let Obadiah explain:
David was cleansed before, and yet he desires to be cleansed. Why? Because though he had a radical purity, he did not have a gradual purity. The whole man was cleansed, but it was not cleansed wholly. He had some grace, but he wanted more. He was pretty well rid of some sins, but others he felt stirring and working. Though no man saw them, yet he felt them. No combat serves the Christian, but that which looks to victory, and he thinks the day is not yet won if he does not yet have the conquest of every sin as well as any one particular sin. (p.14, emphasis mine)
In other words, if you desire holiness you won’t just desire a little bit of it. You will want to be “cleansed completely”.