Too often we Christians are heard as saying something along the following lines: “Your life of casual sex (or cohabitation, or homosexuality) surely must be leading you to feel empty, unfulfilled, and jaded. But we have the solution for those unpleasant feelings!” To which the reply is often: “I’m sorry to disappoint, but I don’t feel excessively guilty or ashamed or unfulfilled. On the contrary, my gay partnership has given me more emotional peace than I’ve ever had.”
In other words, we Christians are often found making [Krister] Stendahl’s mistake: in our rush to defend our understanding of sin and human flourishing, we too easily assume that the same emotions must be the universal human result of certain behavioral choices. When those expected emotions aren’t present—when Paul, for instance, feels no guilt after persecuting the early Christians—we’re suddenly left wondering what went wrong with our doctrine of sin.
I submit that Bonhoeffer may provide us with a way out of this conundrum. Avoiding what he calls “an attack on the adulthood of the world,” we may realize that it isn’t part of our Christian calling to first expose (or conjure) guilty feelings before we commend, say, a traditional Christian vision of marriage. Rather, we can simply acknowledge that human emotions are unpredictable; “peace” and “fulfillment” may indeed be the outcome of practices and behaviors that, from a Christian vantage point, we must deem sinful. But no matter. The gospel lays claim to the whole human being in the midst of that “peace.” Here in Advent, we remember the One who told us he did not come to bring peace (Matt. 10:34). He came to demand our all—to ask for our death and our life. No matter how robust our consciences may be, he came to save us all.
— “Bonhoeffer’s Argument Against Religious Blackmail”(First Things)