Arguing from Scripture and history in The Myth of a Christian Nation, Dr. Greg Boyd makes a compelling case that whenever the church gets too close to any political or national ideology, it is disastrous for the church and harmful to society. Dr. Boyd contends that the American Evangelical Church has allowed itself to be co-opted by the political right (and some by the political left) and exposes how this is harming the church's unique calling to build the kingdom of God. In the course of his argument, Dr. Boyd challenges some of the most deeply held convictions of evangelical Christians in America -– for example, that America is, or ever was, "a Christian nation" or that Christians ought to be trying to “take America back for God." Dr. Boyd will be featured tonight (9 p.m. ET) on CNN's special report God's Warrior's (click for a preview).