Many churches in America today want to be powerful, relevant, and influential in personal and social transformation. But whose kingdom are we building? God's? Or our own? A plethora of programs for outreach, discipleship, and spiritual disciplines are available at any bookstore and on countless websites. Yet what we need most is a renewed understanding of and commitment to the Great Commission. We assume that we already know the nature of this commission and the appropriate methods of carrying it out. But Michael Horton contends that it too often becomes our mission instead of God's. At a time when churches are zealously engaged in writing up mission statements and strategic plans, he argues that we must ask ourselves anew whether we are ambassadors, following the script we've been given, or building our own kingdoms with our own blueprint. Pastors, church leaders, and readers of Horton's Christless Christianity and The Gospel-Driven Life will value this frank and hopeful exploration of the Great Commission as a call to understanding and good practice.