More than twenty-five years ago, J. I. Packer seconded an observation that American Protestantism was “3,000 miles wide and half an inch deep.”1 Things have changed since then. It is now closer to an eighth of an inch. We are in the grip of cultural, social, and political challenges that promise to transform the deepest, most foundational areas of existence in ways that will make us unrecognizable not only to our ancestors, but also to ourselves. Modern people are fundamentally altering