To speak of sin without grace is to minimize the resurrection of Jesus Christ, the fruit of the Spirit and the hope of shalom. . . . But to speak of grace without sin is surely no better. To do this is to trivialize the cross of Jesus Christ, to skate past all the struggling by good people down the ages to forgive, accept, and rehabilitate sinners, including themselves, and therefore to cheapen the grace of God that always comes to us with blood on it. What had we thought the ripping and writhing on Golgotha were all about? To speak of grace without looking squarely at these realities, without painfully honest acknowledgment of our own sin and its effects, is to shrink grace to a mere embellishment of the music of creation, to shrink it down to a mere grace note. In short, for the Christian church (even in its recently popular seeker services) to ignore, euphemize, or otherwise mute the lethal reality of sin is to cut the nerve of the gospel. For the sober truth is that without a full disclosure on sin, the gospel of grace becomes impertinent, unnecessary, and finally uninteresting.
A friend of mine suggested I read, Not the Way It's Supposed to Be: A Breviary of Sin which, to be honest, I wasn't altogether impressed with until the Epilogue. Mostly the book is just a laundry list of sins and how we should perceive them. I wanted to find it convicting, but little of it had that effect. That said, Plantinga's conclusion was great.