Next Thursday, as the rest of us tuck into our turkey feasts, hundreds of needy families in Southern California will open "Boxes of Love." Delivered by several churches led by Pacific Crossroads in Santa Monica, Calif., the boxes contain ingredients for a Thanksgiving meal for six. They allow impoverished families to skip food lines and neighborhood pantries and enjoy the holiday in their own homes. What's unusual about the Pacific Crossroads congregation—and what underpins efforts such as Boxes of Love—is its theologically conservative raison d'être. A member church of the Presbyterian Church in America, Pacific Crossroads is committed to Reformation...