The Book of Matthew cautions readers that "Ye cannot serve God and mammon." But for at least a century conservative American Protestants have been trying to prove that adage wrong. In The Blessings of Business, Darren E. Grem argues that while preachers, activists, and politicians have all helped spread the gospel, American evangelicalism owes its enduring strength in a large part to private enterprise.

Grem argues for a new history of American evangelicalism, demonstrating how its adherents strategically used corporate America--its leaders, businesses, money, ideas, and...