I also saw, moreover, that it was not my good frame of heart that made my righteousness better, not yet my bad frame that made my righteousness worse, for my righteousness was Jesus Christ himself, “The same yesterday, today and forever.” Now did my chains fall off my legs indeed. I was loosed from my afflictions and irons; my temptations also fled away; so that from that time those dreadful scriptures of God [about the unforgivable sin] left off to trouble me; now went I also home rejoicing for the grace and love of God.
– John Bunyan, Grace Abounding to the Chief of Sinners
as quoted by Piper, John; When I Don’t Desire God: How to Fight for Joy; copyright 2004; Crossway Books; Wheaton, Il.; p. 70