(Let’s assume, as I do, that the Supreme Court finds a constitutional right to same-sex marriage when it decides Obergefell v. Hodges sometime next month. What happens next? )

Nothing.

In my state, we already had gay marriage shoved down our throats last fall by a federal court ruling. My state is bible belt, and socially conservative. Yet the response wasn't a bang, heck it wasn't even a wimper. The response by the vast majority of Christians was just a resigned shrug. I hate to be a downer. But the vast majority of Christians surrendered the culture war long ago, quite a few even went over to the other side. I attend a small rural Baptist church, and even in our very socially conservative church, the Preacher has started getting heat from certain members of the congregation when he preaches against gay marriage and says homosexuality is a sin. Usually the criticism comes in two forms, the "I personally agree with you preacher, but such language is turning off the youth and making us look like bigots" and the "When you say gays are going to hell it makes Sister So-and-So sad because her son is gay, and besides I think Jesus loves everybody." If you have this much dissent and division in one conservative church, how do you expect Christians to present any type of united front in the culture war.