Tish Harrison Warren is a priest in the Anglican Church in North America. She writes a weekly newsletter for the New York Times and is a columnist for Christianity Today. She is also the author of Prayer in the Night andLiturgy of the Ordinary. She lives with her husband, Jonathan, and their three children in the Austin, Texas, area.

Andy Crouch (MDiv, Boston University School of Theology) is partner for theology and culture at Praxis, an organization that works as a creative engine for redemptive entrepreneurship. His books include The Tech-Wise Family, Playing God, and Strong and Weak.