Bill Robinson at The Huffington Post says that the real “enemies of marriage” consists of “those who treat it as modity, a temporary merger, a corporate buyout,” citing the impending fourth divorce of billionaire Ron Perelman.

In typically overblown fashion, Robinson asks, “Where are the Defense of Marriage Nazis when marriage is actually under assault? Why aren’t they boycotting Revlon? Is it possible billionaires and celebs are undermining this sacred institution more than ‘the gays’? David Hasselhoff, Babyface, and Christina Applegate, are just this week’s divorce stories. What kind of world are we living in when Eminem remarrying his ex-wife is considered the love story of the day?”

On the one hand, Robinson is right to point to divorce as the most pervasive threat to the institution of marriage. We shouldn’t forget that the biblical allowance for divorce is quite limited and was enacted only because of the reality of human sin, because our “hearts were hard,” and intended to function as a preservational check on further corruption.

But this doesn’t mean there aren’t other threats to marriage, which may just have the potential to be just as dangerous and insidious. It really isn’t an either/or question, but rather a both/and. For example, Acton senior fellow Jennifer Roback Morse highlights the move from gay “marriage” and polygamy, from “creating legal institutions to modate same sex couples and creating legal institutions to modate multiple spouses.”

In today’s column, Morse writes of the situation in Canada, which “have proven that the advocates of marriage are not being hysterical when they warn of the cultural and legal slide into polygamy.”

It’s a bit ironic to note how the world’s argument against the traditional Christian position has changed over the last few decades. When marriage and divorce laws were being relaxed in the last century, the move was hailed by feminists and others as a liberation from patriarchy and monogomous tyranny. When Christians opposed the change of such laws, they were labeled Neanderthals. But now that gay “marriage” is the issue du jour, the world asks, “Where are the Defense of Marriage Nazis when marriage is actually under assault?”

Christians need to witness to the world with humility and recognition of the realities of hypocrisy. When “born-again” Christians are “just as likely to divorce as non-Christians,” there are some huge problems. But this doesn’t mean that there aren’t other threats, or that Christians shouldn’t speak up. It just means that we should be consistent and careful in our witness. Indeed, Christian silence might end up being the greatest threat to the institution of marriage.