While other essays have addressed the attacks on The Church of Jesus Christ of Latter-day Saints, this one takes up a wider issue that has affected far more institutions and individuals than ours: heresy.
On its face it can seem like a frightening word, and historically it was, because it meant far more than a misunderstanding of doctrine. It was an accusation of institutional rebellion, and it carried the weight and the risk of punishment, torture, and death. Today it no longer carries such consequences, even though its invocation still means to intimidate on those old historical terms. Stripped of the institutional and governing power that once stood behind it, heresy reduces to little more than "we disagree, which offends my institution, and I want to scare you out of it."
The accusation of heresy ultimately serves as theological policing, meant to protect an institution and shame the individual back onto its path. With no institutional power left to burn anyone at the stake, the charge now performs only one real function, and that function is a logical fallacy: begging the question. The essay "Your Interpretation Isn't Authoritative" addresses this same fallacy in another form. The charge of heresy commits it by assuming the truth of the very framework the accusation flows from, when in a genuine theological disagreement it is precisely that framework's truth that is in contention. So all the charge actually does is restate the disagreement, neutered of its original power, meant to intimidate without any weight behind the threat, and yet it is still wielded as a weapon by people unaware that the sheath they carry holds no sword.
That the sheath is empty is owed in no small part to brave people in the fight for religious freedom, and the bravest of them is not the one most often named. During the Reformation, theologians recognized that a non-Christian, Greek philosophical framework called Neoplatonism, developed by the philosopher Plotinus in the third century as a reworking of Plato, had been imported into Christian tradition, and some set out to depart from it. Martin Luther turned this scrutiny on indulgences, works, and papal authority and enraged the Catholic Church, but he never touched the Greek doctrine of God and never argued that anyone should be free to be wrong. Michael Servetus took the same critical method and aimed it where Luther would not, at the Trinity itself, and for that both reformers and Catholics hunted him down until he was burned at the stake in Calvin's Geneva in 1553. Servetus died for being right, but he did not die for tolerance. The man who turned that death into the founding argument for religious freedom was Sebastian Castellio, who answered the execution with a sentence that has outlived every doctrine Geneva was defending: to kill a man is not to defend a doctrine, it is to kill a man. The religious freedom we enjoy today owes more to Castellio than to the institutions that opposed him, and it is what reduced the charge of heresy to empty posturing. Heresy was already doing no argumentative or philosophical work, but thanks to Castellio, and to those who carried his argument forward, it now does no punitive work either.
The Dubious Nature of the Charge
Look closely at what the accusation of heresy actually does, and you find it is built to borrow a weight it has no right to. When someone today calls another person a heretic, the word arrives carrying centuries of fire behind it, and that menace is the point. The accuser may have no stake, no sword, and no intention of harming anyone, but the word still reaches for the memory of people who were harmed, and it uses that memory to frighten. It is a threat issued by someone who cannot carry it out, dressed in the costume of someone who once could.
Strip the costume away and nothing is left but a disagreement. The charge of heresy assumes, as its starting premise, that the accuser's own theological framework is the true one, and then condemns the other person for departing from it, when in an honest theological disagreement the truth of that framework is exactly what is in dispute. The accusation simply helps itself to the conclusion it was supposed to prove. It is the purest form of begging the question, and the charge collapses into an admission: the accuser is saying nothing more than "you disagree with me, and I would like that to be a crime."
So the proper response to being called a heretic is not fear and not apology. It is to call the bluff. Unless you are going to burn me at the stake, present an argument for why your theology is correct and mine is wrong. That demand strips the accusation of its borrowed menace and forces it back onto the only ground where disagreements are actually settled, which is argument, and on that ground the person who reached for the word "heretic" instead of an argument is likely indicating they do not have one.
Castellio, the Real Hero
The distinction between the martyr and the hero is the whole point here, because they are not the same man. Michael Servetus is the martyr of this story. He read the Bible, concluded that the Trinity was a Greek philosophical overlay the text did not require, said so plainly, and was burned alive for it. He didn't die for being wrong, he died for being honest, and that honesty earned him the label of heretic. He died defending his own answer, not the principle that no one should be killed over an answer at all.
That principle belongs to Sebastian Castellio. He had worked alongside Calvin, and when Geneva burned Servetus he refused to look away or call it justice. He answered it with the line that has outlasted the entire quarrel that produced it: to kill a man is not to defend a doctrine, it is to kill a man. Whatever you believe about Servetus, whatever you believe about the Trinity, the killing did not vindicate any of it. It only killed a man. That sentence is the seed of religious freedom, and it is why Castellio, and not the more famous reformers around him, is the real hero of this story. The martyr dies for his answer, while the hero says no one should die for getting the answer wrong.
Castellio paid for that stand, though not with his life. Defending the conscience of the condemned was itself dangerous in his world, and when he assembled his case against the killing of heretics, the Treatise on Heretics, he published much of it under a pseudonym, Martinus Bellius, because putting his own name to the argument could have made him the next defendant. The man arguing that no one should be persecuted for belief had to hide his identity to make the argument safely, which tells you how completely the heresy charge still ruled the world he lived in.
His argument did not die with him. It passed forward through the slow growth of religious toleration, into the thought of later writers who insisted that belief cannot be coerced and that the magistrate has no jurisdiction over the conscience, and eventually into John Locke's case for toleration and, through that lineage, into the religious liberty written into the First Amendment. The line from Castellio to that protection is one of influence rather than direct authorship, a current of argument carried by many hands, but it begins with the refusal to accept that Geneva's fire had settled anything. Religious freedom was not handed down by the institutions that held power, it was won, against them, by people who insisted that conscience is not theirs to police. This takes nothing from those who paid for their faith with their lives rather than their pen names, it only recognizes that the particular gift of religious freedom, the principle that the sword has no place in matters of belief, came most clearly from the man who said so when saying so was itself a danger.
Those Who Paid a Price
The argument was made, and the argument was right, but arguments do not disarm institutions overnight. Law lags conscience, and the heresy charge kept its teeth long after Castellio, Locke, Jefferson, and Madison had taken the intellectual ground. The sheath was emptied slowly, and people kept paying the price in the meantime.
Luther himself lived under the threat of it, declared an outlaw whom anyone could kill without penalty, protected only by sympathetic princes. Servetus paid with his life in 1553. Others across the following century, the anti-Trinitarians, the dissenters, the men and women who read the text differently and said so, were exiled, imprisoned, and executed by institutions that could not tolerate the questions. The price was still being paid in the modern world, on supposedly free soil. Joseph Smith was killed by a mob at Carthage, Illinois, in 1844, while in the custody of a state that had promised him protection, for the religion he preached and practiced. That was nearly three centuries after Servetus, and well after the First Amendment had supposedly settled the matter on paper. The principle was written down, but the impulse it was meant to restrain was still loose in the world, and it still is.
That is the sober truth behind the comfortable assumption that this is all ancient history. The argument for freedom of conscience won on paper long before it won in practice, and the people caught in the gap between the two paid for the delay.
The Need for Religious Freedom Today
The fight is not finished, and it is reopening on two fronts at once.
The first is rhetorical and familiar. Online, in the endless theological skirmishing of the present, the language of heresy is being repopularized by people who seem to have forgotten both the American and the Castellian rebuttals to it. They reach again for the word as a weapon, trying to shame and frighten rather than to argue, apparently unaware that they are invoking a machinery of persecution their own civilization spent centuries learning to disarm. This front is answered the way Castellio answered it, by refusing the menace and demanding the argument.
The second front is more serious, because on it the coercion is real again. In the United Kingdom and parts of Europe, people are being arrested, charged, and in some cases convicted for peaceful religious practice, including silent prayer, under laws that establish zones in which certain thoughts and expressions are forbidden. People have been prosecuted for standing quietly on a public street and praying inside their own heads. The reader who wants to confirm this should look into the cases of Adam Smith-Connor, convicted and fined for silently praying near a facility in Bournemouth, and Isabel Vaughan-Spruce, arrested more than once and then charged again for the same silent prayer, along with the buffer-zone provisions of the United Kingdom's Public Order Act that made such prosecutions possible. The details reward examination, because they are not what most people assume is possible in a free country in the present day.
What is happening on that second front is the heresy mechanism returning in a new costume, and its shape is unmistakable once you trace it. Heresy enforcement never actually required a church. It required only an orthodoxy and the institutional power to punish deviation from it. The machine is portable, and it works for whoever happens to be holding it. Centuries ago the institution operating that machine was the Catholic Church, and the man it burned was Servetus. Today the institution operating the same machine is a government that has emptied itself of Catholicism entirely, and among the people it now punishes are Catholics, arrested for praying. The roles have inverted completely. The Church that once held the sword now stands among the accused, and the new inquisitor is a secular, progressive orthodoxy that functions as its own religion and is becoming borderline tyrannical in its enforcement, defending a new untouchable doctrine, the doctrine of offense, that no one may be made to feel that certain protected things are wrong, enforced in one direction only. It is easy and correct to call this Orwellian, a literal policing of thought, but the deeper truth is that it is the Genevan machine with the operators swapped. The orthodoxy being protected has changed, the institution enforcing it has changed, and the mechanism has not changed at all. Which is the whole argument of this essay, proven in the present tense: the heresy charge was never about truth. It was always about an institution with power protecting the things it had decided could not be questioned.
The response to both fronts is the same one Castellio gave, adapted to each. Against the rhetorical charge, return to his logic, that no doctrine is defended by the punishment of the person who doubts it. Against the real coercion, return to the principle the founders of religious liberty fought to establish, that the free exercise of belief and conscience is not the state's to license or forbid. The danger was never fully buried, and it does not stay buried on its own. Each generation that wants to remain free of it has to disarm the machine again.
Conclusion
The temptation to use power to coerce will likely never cease, and with it the temptation to identify the heretics and pursue them in one way or another. It is upon us to reach past the natural man, as Mosiah 3:19 invites, and yield to the enticings of the Holy Spirit. The more we institutionalize heresy, either by codifying it in law or by invoking it through mob rule, the more we risk undoing the works of freedom that the American founding fathers and so many brave soldiers and brilliant theologians fought for, so that we might explore thought and conscience free from coercion. As Jordan B. Peterson has said, "In order to be able to think you have to risk being offensive." To police offense, then, regardless of the institution being offended, is to police thought itself, and is an obvious folly we should steer far away from.