Book excerpt: George W. Bush has brought the question of religion back into American political life in a way that it has not been for decades. From the 2000 election through the challenges America has faced in the wake of September 11, Bush's personal faith -- and his conviction about the importance of religion in our national life -- have won him lasting admiration from the right, while attracting fury and scorn from the left. Now presidential scholar Paul Kengor, the author of the acclaimed God and Ronald Reagan, reconstructs the spiritual journey that carried George W. Bush to the White House -- from the death of his sister, which helped to shape his character, to the conversion experience that changed his life. Matching detailed new research with thoughtful analysis, God and George W. Bush is the definitive look at the spiritual life of this American president.