"Most great powers unravel from within before invading armies (or in America's case, terrorists) conquer them. A preacher might develop a good sermon on how nations fare when they mock God. No less a theological thinker than Abraham Lincoln concluded that our Civil War might have been God's judgment for America's tolerance of slavery. If that were so, why should "the Almighty," as Lincoln frequently referred to God, stay His hand in the face of our celebration of same-sex marriage?" - Cal Thomas, losing his shit, Washington Examiner.
He makes no actual argument, of course, on why civil marriage cannot be extended to gay couples.