Timothy Keller was born and raised in Pennsylvania, and educated at Bucknell University, Gordon-Conwell Theological Seminary, and Westminster Theological Seminary. He was first a pastor in Hopewell, Virginia. In 1989 he started Redeemer Presbyterian Church, in New York City, with his wife, Kathy, and their three sons. Today, Redeemer has more than five thousand regular Sunday attendees and has helped to start nearly two hundred new churches around the world. Also the author of Generous Justice, Counterfeit Gods, The Prodigal God, King's Cross, The Meaning of Marriage, and The Reason for God, Timothy Keller lives in New York City with his family.
Katherine Leary Alsdorf worked twenty-five years in the high-tech industry as an economic analyst and in various executive leadership positions. After her CEO roles at One Touch Systems and Pensare, Redeemer Presbyterian Church recruited Katherine to lead the church’s efforts in marketplace ministry, now called the Center for Faith & Work, which has grown to serve more than two thousand people a year. Katherine has served on the boards of the International Arts Movement, the Fellowship for the Performing Arts, and the Theology of Work Project.