Truth Unites - Did John Calvin Burn Michael Servetus?

Episode Date: August 24, 2026

Gavin Ortlund examines John Calvin’s role in the execution of Michael Servetus and considers what this dark episode in church history can teach us about religious coercion, humility, and the Christian call to respond to error with witness rather than violence.Truth Unites (https://truthunites.org) exists to promote gospel assurance through theological depth. Gavin Ortlund (PhD, Fuller Theological Seminary) is President of Truth Unites, Visiting Professor of Historical Theology at Phoenix Seminary, and Theologian-in-Residence at Immanuel Nashville.SUPPORT:Tax Deductible Support: https://truthunites.org/donate/Patreon: https://www.patreon.com/truthunitesFOLLOW:Website: https://truthunites.org/Instagram: https://www.instagram.com/truth.unites/X: https://x.com/gavinortlundFacebook: https://www.facebook.com/TruthUnitesPage/

In this video, we're going to work through a dark episode from church history, and I'll offer a criticism of the role of John Calvin in the burning of Michael Servetus. The basic goals are twofold. First, just honesty and knowledge about church history. And second, I want to further and have us all just wrestle with this. Oh, this is so painful to work through as you'll see. But I want to put forward my conviction that followers of Christ must not rely on violence to accomplish our goals, but on persuasion and love, the response to error should be witness,

not coercion. And that's very relevant today to us, as we'll talk about. So hopefully that pastoral heart that I have from an episode like this will come through. We'll go through four sections. First, we'll just talk about what happened and try to lay out the facts accurately. Second, we'll consider Calvin's role. And I'll argue that he does bear some moral responsibility for this event. We'll try to meet out exactly how much. Thirdly, we'll try to understand understand the theology of heresy, purgation at play at this time in history, wrestling with historical context and tensions between then and today, how the world has changed in 500 years. It's crazy. Lastly, we'll draw some implications. Before we get into that, maybe because it'll be too tough to come

out of the dark stuff into something happy. Let me just say about, I just today picked up my book, and it arrived here. Why Christianity Makes Sense, a book about Jesus, the mysteries of the world, and the longings in your heart. I'm really excited about this. I poured my heart into it. I worked really hard to try to make it readable. I tried to write a book that would be something like mere Christianity for Gen Z with an emotional twist. It's an accessible walkthrough of basically here's why Christianity

is plausibly true and it makes sense of your heart as well as your mind. That's the goal. By the way, September 18th, Friday night, we're going to have a book launch party here in Nashville at Emmanuel Nashville. I've asked a friend to do music. I'm going to give a talk on the theme of the book. Everybody who comes will get a free book. and I'll say more about that as we get closer, so I just wanted to mention that.

All right, let's dive into this topic. Here's a picture of Michael Servetus. He was a Spanish thinker and kind of a polymath, meaning he was learned at all different kinds of topics, and he was burned at the stake in 1553 in Geneva, and there is dispute a little bit about the details in terms of what is the level of culpability that the Protestant reformer John Calvin had in this event. So that's kind of what we're going to work through a little bit here. Now, there had been a long history of polemics between Calvin and Servetus.

Servetus had gained notoriety in the 1530s for rejecting the doctrine of the Trinity and for criticizing Catholics and Protestants alike on all kinds of ways. Calvin had sought to meet with him in Paris in 1534, which actually for Calvin was taking a risk at that time. Calvin wasn't quite so nasty toward him early on, though he had a very dark and attitude toward him later. But at that meeting, Servetus was a no-show. He didn't come. Later, they had this correspondence, especially during the 1540s. And at one point, Calvin sent him a copy of the institutes of the Christian religion. And Servetus heavily marked it up with insults and critical comments in the

notes and then send it back to Calvin. He also sent him his unfinished work, Restoration of Christianity, which had a lot of views that Calvin is saying these are like the height of blasphemy and so forth. And so things really escalate throughout the 1540s and into the early 1550s, but not just from Calvin. In April 1553, Servetus was imprisoned by Roman Catholic authorities in France. He escaped prison after a few days, but he was still condemned as a heretic by the Roman Catholic leadership and his books were burned. As he's fleeing to Italy, seeking safety inexplicably, he stops in Calvin's Geneva. and he attends a worship service where Calvin was preaching.

I'll put up a picture of Calvin's Church. You can see here. It's just such a dramatic moment because he's recognized. And there's dispute and discussion about why did he do this? You know, it's very curious. Why would he go? In Bruce Gordon's biography of Calvin, really good biography, he suggests that Servetus's repeated attempts to make contact with Calvin bordered on obsession.

and he was sort of taking his last stand and so on and so forth. You can read that. But it's ultimately unclear. We can't know his mind. We don't know exactly why he stopped in Geneva. He would have known it would be dangerous to do that. At any rate, he is recognized. He is detained and he has put on trial for heresy.

We'll talk about Calvin's role in that in just a moment. There are lots of theological issues that are on the table. It really comes to a focal point in terms of his condemnation with his views on the Trinity and then his rejection of infant baptism. Servetus really did not like the traditional account of the Trinity. In one of his letters to the ministers of Geneva, Servetus had written, your gospel is without God, without true faith, without good works. Instead of a God, you have a three-headed Cerberus.

That's a reference to the three-headed hound of Hades, who guards the gates of the underworld. I'll put a picture up of that. So you can see this is taking aim at the Trinity. But there are a lot of issues going on back and forth. So during his heresy trial, 39 different charges are initially raised. And one of them, a lot of the concerns have to do with a kind of pantheism in which he was at least interpreted as saying creatures can become a part of the essence of God in some sense.

There's lots of other things going on. But the Trinity and infant baptism come to be focal points. The heresy trial has five phases, one of which is a running debate of sorts between Servetus and Calvin. and they're writing back and forth to each other in Latin, and both sides are highly polemical at this point, often conducting themselves in bad temper. For example, Servetus called Calvin Simon Magus,

the magician of Acts 8, based upon the belief that Simon was the father of the doctrine of predestination. He also called him an agent of the devil. He said the Geneva Council should put Calvin to death instead of putting him to death and this kind of stuff. Calvin, as we shall see, was very polemical. as well at times. I'll recount that in a moment, but ultimately he is found guilty of heresy, and he's burned at the stake. In October of 1553, let me just read the very sobering account

from Gordon of his final moments. Servetus walked in silence, straw and leaves sprinkled with sulfur were placed on his head, and he was chained to the stake. His arms tied behind his back, he had the fire shown to him before it was tossed onto the wood. According to one source, Servetus shrieked in horror. His last words were, oh, Jesus, son of the eternal God, have pity on me, crucially not eternal son of God. In half an hour, he was dead at the age of 44. It is absolutely brutal coming to terms with these violent episodes, particularly as they occur in church history. That's one of the things we're going to wrestle with in this video because you just, you just picture a human being being burned alive. The heart is pounding and the flesh is burned off and let's not even describe it.

And you just think one of the questions that comes up is how can people do this? And that's a, that's a brutal question for us to wrestle with, which we will. Second section, though, is Calvin responsible for this? Yes, Calvin bears some moral responsibility for this event. Let's try to be careful about this. And I'm not saying some to try to say it was just a tiny bit, but to say he was one figure in a larger picture. Let's try to chart this out. On the one hand, there can be a temptation to exploit this episode as though Calvin is the unique actor in it, or as though this is the window that shows you who Calvin really is and this kind of thing.

People sometimes omit context, like the fact that Calvin petitioned for him not to be burned, but rather beheaded. In the other direction, some people can downplay the wrongdoing here. That's a real temptation. Let's try to work through this, and I'll give three, legitimate qualifications for Calvin's culpability and then four counterpoints. Now, maybe somebody's out there saying, oh, yeah, Calvin was right. So we'll address that as well later in the video. Number one, Calvin at least advocated for a more humane form of death. He petitioned for the sword,

not for the stake, for beheading, not burning. The older historian Ronald Bainton, who want to read a book on Servetus. You can read this when it's old, but it's useful, quotes Calvin's own reference to this, saying, in a letter, we tried to change the the mode of his death in vain. A few others petitioned with him. The counsel vetoed that. And in Calvin's letters shortly after his arrest, he talks about his desire to mitigate the severity of the punishment. And in terms of the motivation for why, Bainton writes, there can be no doubt that Calvin preferred the sword to the stake on humanitarian grounds. So that's interesting. Second, it's also incorrect to isolate Calvin as though he's the singular agent responsive.

Some of the polemical reactions to Calvin right after this event, because during the time, this was very volatile and got a lot of reactions. A lot of people just vilified Calvin for this. You can understand people reacting like that, but nonetheless, people kind of went too far. And sometimes he's portrayed as though he's like the personal executioner of Servetus. But he was one man in a larger context, and the Geneva Council ultimately bears the most immediate and direct moral responsibility for his burning. Thirdly, it's also worth saying that Calvin's views were not necessarily uncommon at this time. It was a common belief that the civil authority has the right to kill heretics. Okay?

I've talked about this a lot in other videos. Alistair McGrath talks about this in his biography of Calvin, and he says, sadly, every major Christian body was traces its history back to the 16th century has blood liberally scattered over its credentials. Roman Catholic, Lutheran, Reformed, and Anglican, all have. condemned and executed their servitas, it is fair to suggest that it is improper to single out Calvin as if he were somehow the initiator of this vicious trend. So that's fair. Let's not act like, you know, everyone was so peaceful and then Calvin came along and started pulling out a sword and killing people, right? Nonetheless, this does not absolve Calvin from responsibility for his

role in this event, for several reasons. First, he had agency in detaining servetus. He himself later wrote that when Servetus was recognized, he thought he should be detained and his own secretary formally brought the accusation. Second, Calvin did express his desire for Servetus's death, albeit not by fire. Quote, I hope that sentence of death will at least be passed upon him, but I desire that the severity of the punishment may be mitigated. Third, Calvin participated in the trial and the proceedings leading up to his death. He's not in the driver's seek, so to speak, he's participating. I mentioned the debates, for example. But fourth, and most basically, and the thing that I want us to wrestle with here, is what happened to Servetus was an expression of Calvin's

theology. He believed civil magistrates could rightly put obstinate heretics and blasphemers to death. And he's quoting from the Old Testament law, and he's saying things like this. Those who spare heretics and blasphemers are themselves blasphemers. Now again, this is a common belief at this time, but it is not universal. And so that leads to this big question that I want us to wrestle with here. Third section of the video, how do we make sense of this theology of heretic killing? You know, I think a very common and understandable immediate reaction, which someone might look down on, but this is how I react, to the ugliness and violence that we see in church history, is to have moments where you just say, how could they do this? You know, you just think about what

it's like to see someone get burned to death. One of my basic questions is, how can they do this? How can those who profess the name of Christ do this? I'll get to the Leviticus verses, if you're wondering about those in a second. But, you know, like the cruelty of burning. How can you not, at least like Calvin, behead the person and then burn the body or something? It just as a way to reduce the sheer physical torture of it. And you think of these reports. of, I mentioned the report of Cervetus shrieking there, but also there's another episode where he was first learning of the sentence and he kind of breaks down and you think, this is just so, so terrible.

It's just, it's okay to be shattered. It's okay to be just undone by the evils that happen in human history. Boy, if you study ancient history, it can be very disturbing. By the way, I was going to do this later. I'll just say it now. If you are studying church history and it never disturbs you, you're probably not you're probably doing something wrong. There are disturbing things that happen.

If you're studying church history and it does disturb you, and you're looking for a voice that will help you sort through that, I would recommend John Dixon's book, Bullies and Saints, an honest look at the good and evil of Christian history. More than any other, I'll put a link to this in the video description. It's a really helpful book. More than any other book that I know of, it really helps with this specific question of,

how do we be honest about evils that have occurred in church history while at the same time that not becoming a barrier to the gospel and so forth. And he's thinking about the Christian faith overall. But it's good for us to wrestle with this. When we have moments in studying history where we think, how could they? Either how could they think that or how could they do that? Those are precisely the moments where it's helpful to lean in and seek understanding. Now, I have a whole video on Jan Hus, one of my heroes in church history,

where I document the evolution of this theology of heretic killing throughout medieval Roman Catholicism. And basically, I'm attempting to chart out where this is coming into the picture, especially from the late 12th century to the early 15th. When the Reformation happens in the 16th century, and this is what we're getting into in this video, this theology is retained in many Protestant circles, and including by some of the leading Protestant figures like a John Calvin. this idea that the civil authority has the right to, or sometimes it'll be expressed as ought to, kill obstinate heretics and blasphemers. That's the theology.

Now, some Protestants push back about that. There's debate about that, as we'll talk about. And one of the critiques of Calvin and those who pertained that theology is you guys are just doing what the Roman Catholics did. And in response to that, Calvin says, because the papists persecute the truth, should we on that account refrain from repressing error. So he's aware of this charge against him, and Calvin is not alone. We have to understand differences of historical context, and this is such a different world from us. 500 years ago, there's no separation of church and state, and heresy is regarded as this utterly destructive evil, the worst kind of evil. Hopefully today we still think, hopefully you still think there is such a thing

as heresy and that it is wrong. I'm not trying to say we should be lighthearted about heresy. Heresy is simply a term to describe the fact that Christianity is not infinitely flexible. There are boundaries. There are beliefs that fall afoul outside of Christianity, and they are destructive. And so we're not trying to take away from that. But this theology that comes in of the extermination of heretics is what we're focusing on here, and we want to wrestle with how could they think this? Now, again, it's not just Calvin.

About a year after Servetus's trial, the Lutheran, The Lutheran, theologian Philip Melancthon, who would later cool towards Calvin a bit, nonetheless, wrote to him and said, quote, I have read your answer to the blasphemies of Servetus and approve of your piety and opinions. I judge also that the Genevaan Senate acted correctly to put an end to this obstinate man who could never cease blaspheming, and I wonder at those who disapprove of this severity. Now, when those final words were into it, he is saying, Malankthan, I wonder at those who disapprove of this severity. In other words, he's saying, how could anyone do that? He's saying, how could anyone disapprove of this. You know, I'm wondering how do they have a problem with this? And that gets us

into the question is, how can it be that from one historical context, human beings say, how could they? And in another, human beings are saying, how could they not? And one basic lesson right out of the gate is humility is induced by studying human history. Because what you start to realize is my intuitions are shaped by my culture more than I realized. Because certain things that just seems so obvious to me. We're not obvious to other people. That doesn't mean we're wrong. It doesn't mean we have to give up our convictions, but it should inculcate humility to consider, you know, something might just seem really clear to me, but a lot of people have thought differently from me, so I need to just be aware of that and understand that and try to get to the bottom of why is that.

Nevertheless, it is worth pointing out that belief in the extermination of heretics was also strongly opposed by many in Calvin's own day, especially among some of Protestants, especially among some of the Anabaptists. For example, and some like reformed or quasi-reformed folks as well. So during Servetus's trial, though they would never read it, didn't arrive to them. The Dutch Anabaptist leader, David Joris, wrote a letter to Protestant church leaders throughout Switzerland. Listen to these words.

Quote, the ministers have written to several places and have determined among themselves to past sentence of death, which has so troubled me that I could have no peace until I had lifted up my voice as a member of the body of Christ, and poured forth my heart briefly before your highnesses and freed my conscience. I hope that the bloodthirsty counsel of the learned will not weigh with you, consider rather the precepts of our only Lord and Master Christ, who taught not only in human and literal fashion in scripture, but also in a divine manner by word and example that we should crucify and kill no one for his faith, but should rather be crucified and killed ourselves. Many of those opposing this theology are appealing to Christ himself, and they're saying this is

the theology that was employed in the crucifixion of Christ. Now, of course, the response to that is going to be, well, that was wrongly employed. Christ was not actually heretic. Nonetheless, it's a rhetorically powerful point to bring this up, at least for the humility to say, can you imagine someone on the Sanhedron and they think, oh, yeah, this really is heresy? again, the humility to put yourself in a different historical context and see how something that is so clearly wrong to us today.

And then you say, how could people tolerate this? And we've all got to wrestle with this. But there were voices at the time saying, no, this theology is wrong. The Reformed theologian Sebastian Castellio is another example. He writes a work at this time, it's a collection of works actually entitled, Concerning Heretics and Whether They Are to Be Persecuted. and he writes under a pseudonym like Joris did as well. Castellio was one of the first reformed Christians to advocate for religious toleration and freedom of conscience.

And this work is a collection of texts from other reformers, all of whom opposed the death penalty for heretics, not because they necessarily thought Servitas wasn't a heretic. Castellio thought, yes, he is a heretic, but he's saying the execution of heretics is not consistent with the teaching of Christ. And in my video on whether Protestantism caused secularization, I discussed this a little bit, and I give other examples of early Christians advocating for religious toleration like Balthasar Humaier and his 1524 treatise concerning heretics and those who burn them. This is a particular emphasis of Anabaptist and Baptist traditions and free church traditions, and I think it's an area we can be grateful for their contribution.

For those of us who do agree with that theology today, I dare say most of us simply take it for granted, again, the brutal reality of studying history and losing your naivety and coming to terms with how it has not always been so. My only point right now is I want us to understand that not everyone thought the same way in Calvin's Day, and I'm thankful for these voices that spoke up in favor of religious toleration. Final section of the video, what do we do with all of this? Two simple questions. Number one, what does this mean for Protestants and or for Reformed Christians and or for Calvinists?

Answer, just be honest with it. If like me, you think the theology of heretic killing is an error and an accretion, as I often use the term, because this is not representative of pre-constantinian Christianity, or even honestly for a long time after, in any sort of widespread way, and that this should have been one of those additional areas of reform among the Protestants, but wasn't, then we just advocate. for that. Here's the thing. As a Protestant, you're allowed to appreciate the reformers and the broader effort while not thinking they got everything right. There are some Protestants who think some of the reformers went too far in certain areas. In the other direction, we can think some of them didn't go far enough. For myself, this is an area where I think the magisterial reformers did not go far enough. I think they should have rejected this theology of heretic extermination. truth is, getting into this, though, is disturbing.

Read John Dixon's book, by the way, if all of this is too disturbing for you, it's a helpful walkthrough. But here's the second and more basic question. So we would just be honest. I mean, as a Protestant, you just, here's the great thing about being a Protestant when you're studying church history. You can just be honest. You just call a spade a spade of spade.

You just follow the data wherever it goes. Second question. And so on this topic, the data is, yes, this was wrong. second question to finish with is how can such violence happen in church history, both in the quantity and in the gruesome nature of it? I don't understand people who don't struggle with this. If you understand what it means to be burned alive, I don't understand, or, I mean, here's a brutal statistic, because let's pick on the Protestants.

In this video, I'm trying to be fair-minded to criticize my own tribe as a Protestant. Even though I'm a reform Baptist, so in some respects I'm defending the Baptists. But nonetheless, let's critique Protestants and say Protestants retained so much of the violence of the world in their reform efforts. And so much so that there are more Christians who killed each other over their theology of baptism in the context of the Protestant Reformation. Then there were Christian martyrs who were killed by non-Christians in the entire first several centuries of the church. Now, part of that is you just have a lot more people around in the 16th century. the church is very small and like the second century and so forth. Nonetheless, the number of Protestants drowning and killing other Protestants over a different view of baptism, it's crazy. And this is a

brutal part of church history that we've all got to wrestle with. What do we do with that? But we need to understand differences of historical context. This was a different world. You didn't have the separation of church and state. And heresy is regarded as this like super evil. It's the worst evil. And so this particular theology of how to redress that great threat came to be normalized, though not universalized, as I've just said, hopefully most of us today can see this is not the way of Christ. However, there are Christians who push back against that, and they point to passages in Leviticus 20 and Leviticus 21 that prescribed burning for various offenses. However, it is disputed whether this meant burning offenders alive so that they then die or burning their corpses

after they have been executed by another means. Kylin Dalich advocate for that second alternative, and that's, I'm not really sure about that. I did a video on the difficult passage about the stoning of children recently. Maybe I'll come back to this and do a video on these verses in Leviticus at some point and say more about this. Briefly for this video's purposes, what I will say is the civil and capital penalty of the Mosaic law belonged to Israel's unique Theocratic Covenant, and they are not transferred to Christian magistrates in the New Covenant era. Christ did not authorize his church to defend the

faith by coercive power. Christ calls his followers to be the ones who are persecuted, to be the sheep's not the wolves. We are called to persuasion, to correction, to love, to argument in a local church context, sometimes to excommunication, but to pray for and bless those who persecute us. The Christian response to heresy is witness rather than coercive power. We conquer by being willing to suffer, not by making someone else suffer. And what I pointed out at the end of my video on Hoos is that we shouldn't come along and say, oh, how could they? What horrible people were so much better today than those people back then. The human heart is not changed, and we have different ways of being cruel today. As I study this episode with Calvin and church history,

I couldn't help but think of some of the way cancel dynamics work out, because the Protestants were constantly being criticized for spawning heresy. And so this may have contributed to a sense of pressure to crack down on heresy out of a fear of being seen as too tolerant. we can do something similar today. Think of the pressures we can feel toward disassociation with someone because of some error or sin or problem that may be a real error. But we need to be so careful in those moments to ask, is the disassociation because of what is best and edifying? Or is it self-protective and overly punitive? It's really easy to disassociate out of we don't want to protect ourselves.

for those of us who follow Christ in every situation we face, what we need to do is lean in and say, Lord, let me not look down on the past. Let me be humbled at what the human heart is capable of and say, Lord, help me to be an agent of your mercy in this world. And that is what the Christian gospel has done in all human history. Because the violence is not just in church history, it's everywhere, but what's amazing is those moments where the gospel lifts us up.

And you see the golden rule, for example, quite a wonderful thing in human history. And the creation in the image of God, for example, and ultimately the gospel message itself. So our calling is to say, Lord, help me to pray for those who persecute me, help me to bless those who curse me. When this world so often falls into cruelty, help me to be an agent of mercy and kindness. I'll leave us with these verses in First Peter 3, which paint them targeted very well. even if you should suffer for righteousness sake, you will be blessed, have no fear of them, nor be troubled. But in your hearts honor Christ the Lord as holy, always being prepared to make a defense to anyone who asks you for a reason for the hope that is in you, yet do it with gentleness

and respect, having a good conscience so that when you are slandered, those who revile your good behavior in Christ may be put to shame, for it is better to suffer for doing good if that should be God's will than for doing evil. Thank you.