When Catholics say "the Church teaches Purgatory," where exactly does that teaching come from? Not from a single book or a sudden announcement, but from a long conversation, held over centuries, in which the bishops of the world gathered, argued, prayed, and finally wrote down what the Church believes.
Three of those gatherings matter most for our subject: the Second Council of Lyons (1274), the Council of Florence (1439), and the Council of Trent (1563). Each was held in response to a particular situation, and each said something specific about Purgatory. Reading them together tells us two things at once: how firmly the Church holds the doctrine, and how carefully she limits what she claims.
First, What Does It Mean for a Council to "Define" Something?
A quick word on how this works, because it helps in reading everything that follows.
The Church believes that Christ gave His apostles, and their successors the bishops, the authority to teach in His name. When the bishops of the whole world meet in union with the Pope in an ecumenical council, and clearly intend to settle a question of faith, their teaching carries the highest authority.
Councils rarely invent. They usually respond to a question, a confusion, or a challenge. And when they do speak, they try to say only what is needed. That restraint is important for Purgatory. As we will see, none of the councils tried to describe it in detail. They affirmed the essentials and left the rest open.
Before the Councils: A Letter About a Word
Before Lyons, there was a small but revealing moment. In 1254, Pope Innocent IV wrote a letter concerning the Greeks, in response to a dispute between Latin and Eastern Christians. The Latin Church used the word "Purgatory" and spoke of a cleansing fire. The Greeks were uneasy with both.
It is often forgotten that the Eastern Christians did not deny that the dead are helped by prayer. They had always prayed for the dead. What troubled them was the vocabulary and certain imagery. The Pope's answer was to emphasize the substance: that there is a purification after death for those who die in grace without having made full satisfaction, and that the faithful can aid them. That substance became the core of what the councils would say.
The Second Council of Lyons (1274)
The setting
The Council of Lyons, in what is now France, was called by Pope Gregory X. One of its main goals was reunion between the Western and Eastern Churches, which had been separated since the events of 1054. The Byzantine Emperor, Michael VIII Palaiologos, who wanted the union for political and religious reasons, sent a profession of faith to be read at the council.
What it taught
That profession of faith, read into the council's acts, includes the first formal conciliar statement about the souls of the dead. In summary, it declared that:
- Those who die truly repentant in charity, but before they have made full satisfaction through works of penance for their sins, have their souls cleansed after death by "purgatorial or cleansing punishments."
- The prayers, Masses, almsgiving, and other works of piety of the living faithful help them.
- Those who have no sin to be cleansed, or who have been cleansed, are received immediately into Heaven.
- Those who die in mortal sin go down to Hell.
Why it matters
Lyons is the first time a general council of the Church stated the doctrine formally. It is also worth noting what the text does not say. It does not mention a location, a duration, or a specific kind of fire. It speaks of "cleansing punishments," a phrase wide enough to allow for different ways of understanding what that cleansing is like.
The union with the Greeks did not last. But the doctrinal statement remained.
The Council of Florence (1439)
The setting
Over a century and a half later, the Church again tried to heal the division between East and West. The Council met first in Ferrara and then in Florence, and for a time it brought together Latin bishops and the leading Greek theologians, including representatives of the Emperor and the Patriarch of Constantinople.
Purgatory was one of the points discussed at length. The Greek delegates were willing to accept that the souls of the dead are helped by the prayers of the living, and that souls can be purified. They were less willing to accept the language of fire, and the Latin side did not insist on it.
What it taught
The decree of union, Laetentur Caeli (July 1439), repeated and clarified the teaching of Lyons. It affirmed that:
- Souls who die truly penitent in the love of God, before making full satisfaction for their sins, are cleansed after death by purgatorial punishments.
- The suffrages of the living faithful, namely the sacrifices of Masses, prayers, almsgiving, and other works of piety, help to relieve them.
- Souls who are completely free of sin enter Heaven at once and see God clearly, "one and three, as He is."
- Those who die in mortal sin go to Hell.
What it left out, on purpose
Here is the detail that matters most. The Council of Florence did not define that Purgatory involves literal fire. The decree speaks of "purgatorial punishments" and leaves the nature of those punishments undefined. The delegates reached agreement on the essentials precisely by not forcing a particular picture.
That is a good example of how the Church works. The substance is firm; the imagery is flexible.
The Council of Trent (1563)
The setting
By the sixteenth century, the situation had changed completely. The Protestant Reformation had split Western Christianity. Martin Luther had at first still accepted Purgatory, but came to reject it, and John Calvin and other reformers rejected it too, arguing that it was unsupported by Scripture and bound up with abuses.
And there were abuses. The practice of indulgences had become tangled up with money in many places, and some preachers made exaggerated promises about shortening the time of the dead. The Church recognized the problem. Trent's task was to defend the doctrine while cleaning up the corruption.
What it taught
In the Decree on Justification (1547), Trent taught that even after a sinner's guilt is forgiven, a debt of temporal punishment can remain to be paid, either in this world or in Purgatory, before the gates of Heaven are opened. It anathematized anyone who denied this.
In the Decree on Purgatory (December 1563), the council declared, in summary, that:
- There is a Purgatory.
- The souls detained there are helped by the prayers of the faithful, and especially by the sacrifice of the Mass.
- Bishops must see that the sound doctrine of the Fathers and councils about Purgatory is believed, taught, and preached.
The part people forget
The second half of the decree is rarely quoted, and it may be the wisest part. Trent told the bishops to keep out of popular preaching the "more difficult and subtle questions" that do not build up faith, as well as anything uncertain, or anything that suggests curiosity or superstition. And it said that anything that "savors of filthy lucre" should be banned as a scandal to the faithful.
In other words, the council did two things at once: it defended the doctrine and warned against speculating about it or profiting from it. A separate decree on indulgences, issued the next day, reinforced the point, calling for the abolition of base gain connected with them.
Echoes in Later Teaching
The councils were not the last word, but they remained the foundation.
- The Second Vatican Council (1962-1965) reaffirmed the doctrine in Lumen Gentium, which describes the Church as having three parts: those still on pilgrimage on earth, those who have died and are being purified, and those who are in glory (Lumen Gentium 49).
- Pope Paul VI, in his Credo of the People of God (1968), professed belief in the souls being purified and the help of the living.
- The Catechism of the Catholic Church (1992) gathers it all up in a few paragraphs (CCC 1030-1032), which we will look at in the next post.
What the Councils Did Not Say
It is just as important to be clear about what the councils left open. They did not define:
- A location for Purgatory
- A length of time for any soul
- Whether the "fire" is literal
- Exactly what the souls experience
- How many souls are there at any time
Anyone who presents these things as official teaching is going beyond the councils. The Church has been consistent: the existence of Purgatory, the purification of the souls, and the help of the living are matters of faith. Everything else is reflection.
A Quick Comparison
| Lyons II (1274) | Florence (1439) | Trent (1563) | |
|---|---|---|---|
| Context | Seeking reunion with the Greeks | Seeking reunion with the Greeks | Response to the Reformation |
| Main teaching | Cleansing after death; living can help | Same, in a formal decree | Purgatory exists; souls helped by prayer, especially the Mass |
| On fire | Not mentioned | Deliberately not defined | Not defined; speculation discouraged |
| Distinctive contribution | First formal statement | Agreement on essentials with the East | Linked to temporal punishment; warned against abuses and superstition |
Why This Matters for Us
It would be easy to see all this as church history, interesting but distant. But there is a quiet lesson in it.
The councils show us a Church that holds the doctrine firmly, because it comes from Christ and the tradition, and humbly, because it refuses to claim more than it knows. They remind us that Purgatory is not a puzzle to be solved with maps and calendars, but a mystery of God's mercy, held in trust.
They also remind us of something practical: the very first thing each council said about Purgatory was that the living can help the dead. That is still the best response to this teaching. We may not know the details, but we know what to do. We pray, offer the Mass, and give in charity.
