It usually arrives more as a challenge than a question: “If God made me this way, how can He condemn me for it?” If a person genuinely is born with same-sex attraction—if it’s wired in from the start—calling that attraction sinful can look cruel, even monstrous. So let’s take the objection seriously and follow it all the way through. We shall look at what “born gay” actually claims, what the science genuinely shows, and then the part most people skip: whether being born with a desire tells us anything at all about whether acting on it is right.

First, Let’s State The Argument Fairly

The reasoning usually runs in three steps:

1. Some people are born with exclusively same-sex attraction.
2. What’s inborn is natural.
3. What’s natural cannot be wrong—so a good God wouldn’t condemn it.

It’s a tidy syllogism—a chain of reasoning in which a conclusion follows from two premises. The emotional force is real, and Christians do the conversation no favours by pretending otherwise. But notice the argument has two separate moving parts: a claim about biology (are people born this way?) and a claim about morality (does being born a certain way make the resulting behaviour right?). The two are usually blurred together. Once we pull them apart, the whole question looks different.

What The Science Actually Shows

Start with the biology. Is there a “gay gene”? The honest answer is no—and that’s not a religious talking point, it’s the scientific consensus.

Twin studies were the early workhorse here.

• Identical twins—monozygotic twins, meaning they developed from a single fertilised egg and share essentially all their DNA—are the perfect natural experiment. If sexual orientation were purely genetic, whenever one identical twin is gay the other should be too, every single time. In other words, we should expect 100% concordance—or sharing of the same traits. They don’t. Early studies by J Michael Bailey and Richard Pillard found concordance around 52% in identical twins. Later, better-sampled work pulled the figure lower—a large 2016 review put the median nearer 24%. Whatever the exact number, it sits far below 100%. That gap is the headline: two people with identical genes, often raised in the same home, frequently differ in orientation. Genes load the dice; they don’t determine the outcome.
• The biggest study yet confirmed the picture. In 2019 a team led by Andrea Ganna published the largest genome-wide association study (a GWAS scans the whole genome of huge numbers of people, hunting for genetic variants linked to a trait) on same-sex behaviour in the journal Science, drawing on roughly 470,000 people. They found a handful of associated genetic markers—but together these explained less than 1% of the variation, and all genetic factors combined accounted for somewhere between 8% and 25%. Their own conclusion was blunt: there’s no single “gay gene,” and you cannot predict a person’s behaviour from their genome. Sexuality, like most human traits, emerges from a tangle of genetic, developmental and environmental influences.

So where does that leave the “born this way” slogan? Roughly here: many people experience same-sex attraction as something they didn’t choose and cannot simply switch off, and that experience is real and should be taken seriously. But “I didn’t choose to feel this” is a very different claim from “I was genetically programmed for this,” and the science supports the first far more than the second.

Now—and this is the crucial turn—suppose we grant the strongest version anyway. Suppose, for the sake of argument, a person is born with same-sex attraction, full stop. Does that settle the moral question? Here the conversation usually stops, exactly where it should get interesting.

Natural Doesn’t Always Equal Right

This is where the whole argument quietly breaks. The hidden assumption is that if something is natural or inborn, it must therefore be good. Philosophers have a name for this mistake—in fact, two. The Scottish thinker David Hume pointed out in the 18th century you cannot logically derive an “ought” from an “is”: you cannot move from a fact about how things are to a conclusion about how they should be without smuggling in some extra moral premise. This is often called the is-ought problem. The closely related move—assuming that whatever is “natural” is automatically right—is so common it has its own label: the appeal to nature fallacy.

Spell it out and it’s obvious. Plenty of things are natural, inborn or genetically influenced, and nobody thinks they’re therefore good. There’s solid evidence of genetic and biological contributions to traits such as aggression, alcohol dependency or a tendency toward anxiety.

We don’t conclude punching people is fine because some are born quick-tempered, or that we should never treat alcoholism because the predisposition is inherited. “It’s natural” has never been a moral trump card. The instinct can be entirely real and the action still be wrong.

This is why a Christian can say, without contradiction, “I fully accept you didn’t choose to feel this—and that still doesn’t tell us whether acting on it is right.” Origin and ethics are two different questions. Where a desire comes from is a matter of biology and biography. Whether a desire should be acted on is a matter of morality. Confusing the two is the single biggest error in the “born this way, so it must be okay” argument.

But Isn’t It Unfair? Taking The Secular Objection Seriously

A thoughtful sceptic will not stop there. They will say: “Fine, natural doesn’t automatically mean right. But by what standard is this wrong? Two adults who love each other, who consent, who harm no one—where’s the problem?” This is the strongest secular case, usually built on what ethicists call a consent-and-harm framework: an act is wrong if it involves coercion or causes harm. Otherwise it’s nobody’s business.

It’s a serious position, and one that can’t be shrugged away. Two things are worth saying.

• The consent-and-harm test is not the neutral, obvious starting point it appears to be—it quietly relies on a string of moral assumptions. It takes for granted we already agree on which harms actually count, what human beings are for, and why consent should carry such decisive weight. None of those are facts: they’re moral commitments, and they need defending like any other. So when a sceptic objects that Christians are merely “imposing a standard,” the reply is straightforward: so is the consent-and-harm view. Noticing the Christian has a framework settles nothing unless you can show your own framework rests on no assumptions at all—when it plainly does.
• More deeply, the Christian isn’t working from a harm calculation at all. The Christian claim is that human beings are made—designed, with a purpose—and that sexuality has a particular shape within that design: the union of a man and a woman in marriage. On this view the question is never merely “is anyone getting hurt?” but “is this what we were made for?” Sure, you may reject that framework, but you cannot refute it simply by assuming a different one. Both sides are making a claim about what human life is ultimately about. The disagreement is real, and it’s honest to name it as such rather than pretend one side is just “reason” and the other “religion.”

What The Bible Actually Says

For the Christian, the question doesn’t hang on twin studies or Greek philosophy in the end—it rests on what God has revealed. And here the Bible is neither obsessed with this issue nor silent on it. Scripture consistently presents sexual intimacy as belonging within the marriage of a man and a woman, a pattern set down at the very beginning: “a man shall leave his father and his mother and hold fast to his wife, and they shall become one flesh” (Genesis 2:24). Acts outside that pattern—including same-sex sexual acts—are described as falling short of God’s design (see Romans 1:26–27 and 1 Corinthians 6:9–10).

But—and here’s the part that gets missed—the Bible never singles out same-sex attraction as a uniquely monstrous sin. In the very passage that names it, the apostle Paul reels off a list that also includes greed, gossip, pride and envy (Romans 1). The scholar Kevin DeYoung makes the point sharply: the Bible’s sexual ethic is demanding for everyone, gay and straight alike. A heterosexual person is called to chastity outside marriage just as seriously. The standard is not “heterosexuality good, homosexuality bad”; it’s “sexuality belongs in marriage as God defined it, and all of us fall short of that in various ways.” That reframing matters enormously, because it dismantles the idea that Christianity reserves a special hatred for gay people. It doesn’t. It holds out a high, costly call to holiness aimed squarely at everyone.

Predisposition Isn’t Permission

Here’s the whole argument in a sentence: being predisposed to something isn’t the same as being permitted to do it. (“Predisposition” means an inbuilt leaning or tendency toward something—you start out tilted in that direction.) A predisposition is about where you begin; it says nothing about where you’re obliged to go.

Christianity actually has a way of making sense of this, and it’s worth grasping because it applies to every human being. The historic Christian claim is we’re all born disordered—not neutral, not basically fine, but bent away from God from the start. Theologians call this original sin: the teaching that human nature itself, since the fall, comes pre-loaded with desires that pull against God’s will. On this understanding every single person is “born that way” in some respect. The greedy person, the proud person, the quick-tempered person, the person whose desires run toward someone they should not—none of us starts from zero. So a Christian is the last person who should be shocked someone experiences deep, unchosen desires that don’t line up with God’s design. Of course they do. So do all of us. That’s precisely what the doctrine predicts.

What the Christian denies is “this is how I am” is the end of the story. The gospel’s whole message is that God meets us as we are and refuses to leave us there. The New Testament calls the lifelong process of being reshaped sanctification—literally being made holy, gradually conformed to the character of Christ. It’s slow, often painful, and it touches every believer’s deepest desires, sexual and otherwise. Nobody is exempt. Nobody gets to say “this is just who I am, so it’s off-limits to God.”

A Better Word Than “Condemn”

Notice, finally, the word in the original question: condemn. It frames God as a prosecutor hunting for reasons to convict. But the heart of the Christian message runs the other way. “God shows His love for us in that while we were still sinners, Christ died for us” (Romans 5:8). The point of the gospel is not that God scans humanity for the worst people and condemns them; it’s that He enters a world of people who are all, in different ways, born bent—and offers every one of us mercy at His own cost.

There are men and women across the church today who experience same-sex attraction and have chosen, out of love for Christ, lives of costly faithfulness—some in celibacy, some on other paths. Writers such as Sam Allberry and Rosaria Butterfield have told these stories from the inside, and they’re not stories of self-hatred but of people who found something they considered worth more than the fulfilment of every desire. You don’t need to agree with them to recognise this is a serious, dignified way to live, not the caricature of repression it’s often made out to be.

So can God condemn homosexual behaviour even if some are born gay? The deeper answer is that the framing of the question misses the gospel. God doesn’t condemn people for how they were born—He calls all of us, born bent in a hundred different directions, out of our brokenness and toward Himself. The question was never really about biology. It was about whether our desires get the final word, or whether God does.

Related Reads

• Is Same-Sex Attraction Sinful? A Biblical Response
• What’s Wrong with Transgender Ideology? The Biblical and Scientific Case
• Are There More Than Two Sexes?
• Can Churches Conduct Same-Sex Weddings?
• Does the Bible’s Silence on Gay Marriage Mean It’s Permitted?