Tim Keller is the Senior Pastor at Redeemer Presbyterian church in New York City. Dr. Keller attended Bucknell University, Gordon Conwell Theological Seminary and Westminster theological Seminary. Keller promotes a Reformed Christianity that has a vision that encompasses not only doctrinal statements, but also our piety, evangelistic outreach, and missions of mercy. He has served on staff with InterVarsity Christian Fellowship and as Assistant Professor of Practical Theology at Westminster Theological Seminary. Dr. Keller has authored two books and numerous articles and essays about the Christian faith and its mission of engaging and transforming society.