By recognizing gay unions as marriage, just like the husband-wife relationship we’ve always called marriage, the state is engaging in (or at least codifying) a massive re-engineering of our social life. It assumes the indistinguishability of gender in parenting, the relative unimportance of procreation in marriage, and the near infinite flexibility as to what sorts of structures and habits lead to human flourishing.

As the Surpreme Court hears oral arguments in DeBoer v. Snyder, it’s worth asking the question: Is there any reason a decent, rational, non-bigoted American might oppose same-sex marriage? Just as important: Are there any decent, rational, non-bigoted Americans who are willing to consider why other Americans might have plausible reasons for opposing same-sex marriage? This blog post is my way of saying “yes” to the first quesiton and “let’s hope so” to the second.

I’m a pastor, and my main concern is with the church—what she believes, what she celebrates, and what she proclaims. I don’t expect the world to be the church (and I pray that the church does not become the world). And yet, no one who lives in the world (that’s all of us) and no one who cares about the wellbeing of those in the world (that too should cover almost all of us) can be indifferent about marriage. With everything that may divide us, proponents on both sides of this debate can at least recognize that something truly sigificant is at stake in this debate.

I’m concerned that many younger Christians—ironically, often those passionate about societal transformation and social justice—do not see the connection between a traditional view of marriage and human flourishing. Many Christians are keen to resurrect the old pro-choice mantra touted by some Catholic politicians: personally opposed, but publicly none of my business. I want Christians (who are, after all, the main readers of this blog) to see why this issue matters and why—if and when same-sex marriage becomes the law of the land—the integrity of the family will be weakened and the freedom of the church will be threatened.

I know this is an increasingly unpopular line of reasoning, even for those who are inclined to accept the Bible’s teaching about marriage. Perhaps you agree with the traditional exegetical conclusions and believe that homosexual behavior is biblically unacceptable. And yet, you wonder what’s wrong with supporting same-sex marriage as a legal and political right. After all, we don’t have laws against gossip or adultery or the worship of false gods. Even if I don’t agree with it, shouldn’t those who identify as gay and lesbian still have the same freedom I have to get married?

That’s a good question, but before we try to answer it we need to be sure we are talking about the same thing. Let’s think about what is not at stake in the debate over gay marriage.

• The state is not threatening to criminalize homosexual behavior. Since the Supreme Court struck down anti-sodomy laws in Lawrence v. Texas (2003), same-sex intimacy has been legal in all fifty states.
• The state is not going to prohibit gays and lesbians from committing themselves to each other in public ceremonies or religious celebrations.
• The state is not going to legislate whether two adults can live together, profess love for one another, or express their commitment in erotic ways.

The issue is not about controlling “what people can do in their bedrooms” or “who they can love.” The issue is about what sort of union the state will recognize as marriage. Any legal system which distinguishes marriage from other kinds of relationships and associations will inevitably exclude many kinds of unions in its definition. The state denies marriage licenses to sexual threesomes. It denies marriage licenses to eight year-olds. There are almost an infinite number of friendship and kinship combinations which the state does not recognize as marriage. The state doesn’t tell us who we can be friends with or who we can live with. You can have one friend or three friends or a hundred. You can live with your sister, your mother, your grandfather, your dog, or three buddies from work. But these relationships—not matter how special—have not been given the designation “marriage” by the church or by the state. The state’s refusal to recognize these relationships as marital relationships does not keep us from pursuing them, enjoying them, or counting them as significant.

Marriage: What’s the Big Deal?

In the traditional view, marriage is the union of a man and a woman. That’s what marriage is, before the state confers any benefits on it. Marriage, in the traditional view, is a pre-political institution. The state doesn’t determine what defines marriage; it only recognizes marriage and privileges it in certain ways. It is a sad irony that those who support gay marriage on libertarian grounds are actually ceding to the state a vast amount of heretofore unknown power. No longer is marriage treated as a pre-political entity which exists independent of the state. Now the state defines marriage and authorizes its existence. Does the state have the right, let alone the competency, to construct and define our most essential relationships?

We must consider why the state has bothered to recognize marriage in the first place. What’s the big deal about marriage? Why not let people have whatever relationships they choose and call it whatever they want? Why go to the trouble of sanctioning a specific relationship and giving it a unique legal standing? The reason is that the state has an interest in promoting the familial arrangement whereby a mother and a father raise the children which came from their union. The state has been in the marriage business for the common good and for the well-being of the society it is supposed to protect. Kids do better with a mom and a dad. Communities do better when husbands and wives stay together. Hundreds of studies confirm both of these statements (though we all can think of individual exceptions I’m sure). Gay marriage assumes that marriage is re-definable and the moving parts replaceable.

By recognizing gay unions as marriage, just like the husband-wife relationship we’ve always called marriage, the state is engaging in (or at least codifying) a massive re-engineering of our social life. It assumes the indistinguishability of gender in parenting, the relative unimportance of procreation in marriage, and the near infinite flexibility as to what sorts of structures and habits lead to human flourishing.

But What about Equal Rights?

How can I say another human being doesn’t have the same right I have to get married? That hardly seems fair. It’s true: the right to marry is fundamental. But to equate the previous sentence with a right to same-sex marriage begs the question. It assumes that same-sex partnerships actually constitute a marriage. Having the right to marry is not the same as having a right to the state’s validation that each and every sexual relationship is marriage. The issue is not whether to expand the number of persons eligible to participate in marriage, but whether the state will publically declare, privilege, and codify a different way of defining marriage altogether. Or to use a different example, the pacifist has a right to join the army, but he does not have the right to insist that the army create a non-violent branch of the military for him to join.

Redefining marriage to include same-sex partnerships publicly validates these relationships as bona fide marriage. That’s why the state sanction is so critical to gay marriage proponents and so disconcerting to those with traditional views. The establishment of gay “marriage” enshrines in law a faulty view of marriage, one that says marriage is essentially a demonstration of commitment sexually expressed. In the traditional view, marriage was ordered to the child, which is why the state had a vested interest in regulating and supporting it. Under the new morality, marriage is oriented to the emotional bond of the couple. The slogan may say “keep the government out of my bedroom,” as if personal choice and privacy were the salient issues, but same-sex marriage advocates are not asking for something private. They want public recognition. I don’t doubt that for most gay couples the longing for marriage is sincere, heartfelt, and without a desire to harm anyone else’s marriage. And yet, same-sex unions cannot be accepted as marriage without devaluing all marriages, because the only way to embrace same-sex partnerships as marriage is by changing what marriage means altogether.

Enough Is Enough?

So why not call a truce on the culture war and let the world define marriage its way and the church define marriage its way? You may think to yourself: maybe if Christians were more tolerant of other definitions of marriage we wouldn’t be in this mess. The problem is that the push for the acceptance same-sex marriage has been predicated upon the supposed bigotry of those who hold a traditional view. The equal signs on cars and all over social media are making a moral argument: those who oppose same-sex marriage are unfair, uncivil, unsocial, undemocratic, un-American, and possibly even inhumane. If Christians lose the cultural debate on homosexuality, we will lose much more than we think. David S. Crawford is right:

The tolerance that really is proffered is provisional and continghent, tailored to accommodate what is conceived as a significant but shrinking segment of society that holds a publically unacceptable private bigotry. Where over time it emerges that this bigotry has not in fact disappeared, more aggressive measures will be needed, which will include explicit legal and educational components, as well as simple ostracism.

We must not be naïve. The legitimization of same-sex marriage will mean the de-legitimization of those who dare to disagree. The sexual revolution has been no great respecter of civil and religious liberties. Sadly, we may discover that there is nothing quite so intolerant as tolerance.

Does this mean the church should expect doom and gloom? That depends. For conservative Christians the ascendancy of same-sex marriage will likely mean marginalization, name calling, or worse. But that’s to be expected. Jesus promises no better than he himself received (John 15:18-25). The church is sometimes the most vibrant, the most articulate, and the most holy when the world presses down on her the hardest.

But not always—sometimes when the world wants to press us into its mold we jump right in and get comfy. I care about the decisions of the Supreme Court and the laws our politicians put in place. But what’s much more important to me—because I believe it’s more crucial to the spread of the gospel, the growth of the church, and the honor of Christ—is what happens in our local congregations, our mission agencies, our denominations, our parachurch organizations, and in our educational institutions. I fear that Christians are losing the stomach for principled disagreement and the critical mind for careful reasoning. Look past the talking points. Read up on the issues. Don’t buy every slogan and don’t own every insult. The challenge before the church is to convince ourselves as much as anyone that believing the Bible does not make us bigots, just as reflecting the times does not make us relevant.

This blog has been adapted from Appendix 1 in What Does the Bible Really Teach about Homosexuality?

Kevin DeYoung has been the Senior Pastor at University Reformed Church in East Lansing, Michigan since 2004. Kevin blogs at the Gospel Coalition. This article is reprinted with his permission.