"Like" the Patheos Progressive Christian Page on Facebook to receive today's best commentary on Progressive Christian issues.

Asked in 2002 how his faith influences his politics, Rick Perry replied, "I don't think it does, particularly." But at the massive prayer rally he hosted in Houston on Saturday, the sitting governor of Texas prayed, "as a nation, we have forgotten who made us." The deeply political assumptions of the event paraded past all day long, proving that the Perry of 2002 either had a problem with the truth or, like his predecessor in the governor's mansion, has a debilitating incapacity for self-reflection.

Perry and his fellow religious-right candidates for the GOP presidential nomination may genuinely believe their messianic notions are private matters, that they can preach to 30,000 fellow believers about re-installing God as the invisible leader of the nation and still not be seen primarily as prophets of a reactionary political theology. They may be right. Evidence suggests that the mainstream press only comprehends them as kooky, delusional, and perhaps provincial figures, rather than rational actors with ideas fundamentally opposed to liberal democracy. But that is what they are—a reality made all the more tragic by the fact that the contradictions of liberal democracy created them.

The founders of the United States were part of the Enlightenment tradition that, responding in horror to the bloody religious wars of medieval Europe, had conceived of a new kind of politics where divine appeals would be seen as illegitimate. Enlightenment thinkers disagreed on just how darkly to view religion, but most agreed that unreformed religious passions led to violence and tyranny. Their work reoriented thinking about religion toward what men and women can observe directly and demonstrate conclusively. Their materialist vision of the political state echoes in the U.S. Constitution, with its prohibitions against federal establishment of religion.

Despite the consistently religious tone of America's modern politicians, the separation between matters of state and appeals to the divine remains relatively well guarded in American life. But as Mark Lilla demonstrates in The Stillborn God, it is a division fraught with tension, and surprisingly susceptible to challenges from surging new political theologies.

The position of some American elites has been to stigmatize religion out of any kind of respectability—a well-intentioned effort at bolstering a system that must reconcile the clashing interests of a centerless society. But as Lilla writes, orthodoxies always spawn heterodoxies. If history shows anything, it's that religion always comes back, and more fervently the more vigorously it is persecuted. Rick Perry, Michele Bachmann, and Rick Santorum are the unintended consequences of a state struggling to find the balance between containing religious passions and protecting the religious liberties Americans have come to cherish. Playing its vital role as the watchdog of religious interference with government, the state blunders, provoking conservative believers who sense their marginalization and are increasingly determined not to take it lying down.