Common Grace and Indwelling Sin in a Nutshell

I just got out of church and heard Tim Keller say something that profoundly simplifies the riddle of common grace and indwelling sin in the believer. This isn’t an exact quote, but it’s close.

Because unbelievers are created in the image of God, they are far better than their wrong views should make them. But, Christians, because they are sinners, are far worse than their right views should make them.

And viola! There you have it.