“Then I, John, saw the holy city, New Jerusalem, coming down out of heaven from God, prepared as a bride adorned for her husband.”  Revelation 21:1–2   A few years ago, a family spent months planning their very first cross-country road trip. They mapped every highway, downloaded audiobooks, and packed the cooler with snacks. But the most important piece of paper in the glove box was a simple reservation printout. It held an exact street address in a mountain town they had never vi...