Many Christians have forsaken social activism, since history seems at first glance to be moving against us. John Barber's book does precisely what is needed. He advocates a clear program for Christian cultural activism, based on the biblical program of the Kingdom of God. He shows that we need to emphasize both the Cultural Mandate (filling and subduing the earth) and the Great Commission (making and teaching disciples of Jesus). And he shows that although we sometimes endure defeat, God's plan cannot fail. I hope that many read this book and act on its program. John Frame, Professor of Systematic Theology, Reformed Theological Seminary