Karl Barth on occasion referred to “secular parables,” cultural artifacts produced by non-Christians (or Christians not attempting to point directly to their faith) that nevertheless bore witness to the truth of the God we know best through Jesus. I love that phrase. Which is a little odd, as I’m not normally a huge fan of the sacred-secular distinction. Often that distinction is used in a way that feels to me very limiting and, moreover, I’ve often wondered just what is not sacred to the God who comes in Jesus to redeem in love. Be that as it may, I still love that phrase. Perhaps it’s because Barth, one of the most influential...