This Advent season, on the eve of the five hundredth anniversary of the Protestant Reformation, I’ve been thinking a lot about the theology of Martin Luther. Particularly, I’ve been pondering his doctrine of simul iustus et peccator. This doctrine often gets articulated anthropologically—you and I live our lives “simultaneously justified and sinful.” Our experience of life under the simul is described well in Romans 7:15 (ESV): “I do not understand what I do.
