It’s summer and the ELCA is embroiled in another extended discussion of human sexuality. We do this sort of thing at least every other year (whenever a Churchwide Assembly is scheduled), and it’s been going on for decades now. Sex must be a big deal in our church. But no, we nervously respond, sex really isn’t that big a deal—at least it shouldn’t be. Sex and what we believe about sex “is not the gospel,” we say. It is a penultimate thing. How our church decides about issues of human sexuality should not be a church-dividing matter, we contend. In...