Reformation: Europe’s House Divided 1490–1700

The late 15th and early 16th centuries in Europe were marked by several transformative cultural and political shifts that weakened traditional structures and created a fertile environment for the Reformation:

Political Consolidation and Competition: Warfare shifted to Italy in the 1490s as the ruling families of France (Valois), Spain (Trastamara), and the Holy Roman Empire (Habsburg) contended for European leadership. Many secular rulers were centralizing their power, expanding their revenue collection, and maintaining permanent standing armies. This led to frequent jurisdictional clashes between the papacy and monarchs over church property and clerical appointments.
The Printing Revolution: The invention of movable-type printing on paper significantly reduced the cost of reproducing texts, allowing for the rapid distribution of information. This encouraged the spread of literacy and solo reading, which fostered a more inward-looking, personalized devotion that relied less on public ritual. It also led to an increase in vernacular Bibles, which many churchmen feared would undermine their authority.
Humanism and the “Renaissance”: This intellectual movement refocusing on ancient Greek and Latin texts—the humanae litterae—promoted a realization that there was more to life than the medieval period. Humanists emphasized a return “to the sources” (ad fontes), which led to the critical editing and historical scrutiny of revered texts, including the Bible. This spirit of inquiry challenged long-standing ecclesiastical authorities.
Atmosphere of Crisis and Fear: Europe faced a persistent external threat from the Ottoman Turks, who captured Constantinople in 1453 and overran Hungary in 1526. This, combined with political instability and the arrival of devastating new diseases like syphilis in the 1490s, fueled widespread apocalyptic anxiety and the expectation that the Last Days were imminent.
Emerging Local Churches: In many areas, particularly in central Europe, local princes and city councils were already taking over responsibilities previously held by the church hierarchy, such as running schools and hospitals or funding preacherships. This laid the groundwork for “Landeskirchen”—locally run churches that looked to secular magistrates rather than bishops for leadership.
Iberian Militancy: In Spain and Portugal, centuries of medieval warfare against Islam and Judaism created a militant form of Catholicism characterized by an obsessive suspicion of religious deviance. This led to the establishment of the Inquisition and a state-sponsored “Reformation before the Reformation” that pre-emptively addressed many clerical abuses seen elsewhere.

The obsession with the Mass and Purgatory in late medieval northern Europe created a religious environment focused on the mechanical accumulation of merit, which eventually made Luther’s message of “faith alone” exceptionally impactful.

The following points detail how these obsessions contributed to the Reformation’s success:

Industry of Intercession: A sophisticated “industry” of prayer developed, where individuals traded good works, charity, and specifically endowed Masses for precise reductions in Purgatory pain. This was particularly intensive in the North, stretching from the Spanish Atlantic fringe to Denmark and north Germany.
Active Salvation vs. Passive Grace: In northern Europe, sermons on penance emphasized the active role of the sinner in “piling up reparations” to merit time off from Purgatory. This contrasted with southern Europe, where sermons focused more on the priest as a mediator of grace.
The Target of Luther’s Message: Because northerners were so invested in doing things to earn their salvation, Martin Luther’s message—that these devotions were merely “clerical confidence tricks”—was far more revolutionary and effective there than in the South, where the Purgatory industry was less developed.
Lay Control and Resentment: The Purgatory industry was often facilitated through lay-run “gilds” or confraternities. While these gave laypeople control over their devotional lives, it also created a burden of “labour-intensive devotion” that many were weary of by the 1510s, leaving them ready for a message of reform.
Financial Haemorrhaging: The practice of selling indulgences—which promised to release souls from Purgatory—became the primary spark for Luther’s rebellion. The redirection of vast amounts of money from northern territories to Rome for projects like the rebuilding of St. Peter’s Basilica fueled long-standing political and economic grievances.
Anticlericalism: The perceived greed of the clergy who “fed on the dead” by cultivating chantries and death-related endowments for their own profit created a powerful literature of abuse that the Reformation successfully harnessed.

The book Reformation: Europe’s House Divided 1490–1700 by Diarmaid MacCulloch is a magisterial survey of the transformative religious upheavals that reshaped Latin Christianity and European identity. Rather than treating the Reformation as a single event, MacCulloch presents it as a series of multiple, often conflicting Reformations that affected every aspect of life, from high politics to intimate domestic relationships.

Core Theological and Intellectual Framework

The Shadow of Augustine: MacCulloch argues that the entire Reformation can be seen as an internal debate within the mind of the 5th-century theologian Augustine of Hippo. The central conflict was the triumph of Augustine’s doctrine of grace (man’s total dependence on God for salvation) over his doctrine of the Church (the necessity of the institutional Church for salvation).
Humanism and “Ad Fontes”: The intellectual movement of Humanism, with its cry of ad fontes (“back to the sources”), challenged medieval authorities by emphasizing the critical editing of ancient texts, most crucially the Greek and Hebrew originals of the Bible.
Prophetic Expectation: The era was characterized by intense apocalyptic anxiety fueled by military threats from the Ottoman Empire and the arrival of new diseases like syphilis. Many, including Martin Luther, viewed themselves as prophets in the Last Days.

The Two Pillars of the Old Church

MacCulloch adopts a contemporary metaphor to describe the foundational structures that the Reformers targeted:

The Mass and Purgatory: The central act of the Eucharist was linked to an “industry of intercession” where prayer and Masses were endowed to reduce a soul’s time in Purgatory.
Papal Primacy: The administrative revolution of the 11th and 12th centuries had established a centralized, unified Latin-speaking culture under the symbolic leadership of the Pope.

Key Evolutionary Phases

Wildfire Growth (1517–1525): Following Luther’s initial protest, the movement spread rapidly as a “wildfire growth” (Wildwuchs), characterized by popular excitement, iconoclasm, and eventually the massive social upheaval of the Peasants’ War.
Confessionalization (post-1560s): In the latter half of the 16th century, religious identities hardened into fixed “confessions” supported by secular authorities—principally Lutheran, Reformed (Calvinist), and Tridentine Catholic.
Global Expansion: As Europe’s house divided, the religious conflict was exported globally through Spanish and Portuguese colonial empires and later through the settlement of North America.

Social Impact and Outcomes

Reformation of Manners: Both Catholic and Protestant authorities sought to impose an unprecedented level of moral discipline on society, regulating sexual behavior, suppressing traditional carnivals, and launching the witch-craze.
The Family as Icon: The Protestant Reformation’s rejection of clerical celibacy and monasticism turned the married clergy and the patriarchal family into the central icons of the new social order.
Emergence of Toleration: Long-term warfare and the inability of any side to secure a religious monopoly eventually forced the reluctant acceptance of religious pluralism and the development of the theory of religious freedom.
A Divided Legacy: The book concludes that while Europe has become largely secularized, the Reformation continues to shape the modern world, particularly through the vibrant Protestant praticies derived from the 16th century that remain central to American culture.

Diarmaid MacCulloch’s Reformation: Europe’s House Divided 1490–1700 is structured into three parts that cover the origins, the regional divisions, and the social impact of the religious upheavals. The following is a summary of each chapter:

Part I: A Common Culture

Chapter 1: The Old Church, 1490–1517
- Describes the late medieval Church as a vibrant, functioning institution rather than a moribund one.
- Identifies the two “mighty pillars” of this system: the Mass (linked to the doctrine of Purgatory) and Papal Primacy.
- Explains the “industry of intercession” where laypeople engaged in a spiritual trade of prayer and Masses to reduce time in Purgatory.
Chapter 2: Hopes and Fears, 1490–1517
- Examines the external threats, particularly the Ottoman Turks, and the arrival of syphilis, which fueled apocalyptic anxiety.
- Discusses the “Iberian Exception,” where Spain conducted a “Reformation before the Reformation” through the Inquisition and ethnic cleansing.
- Highlights the intellectual revolution of Humanism and the printing press, which fostered personalized devotion and a return “to the sources” (ad fontes).
Chapter 3: New Heaven: New Earth, 1517–24
- Explores Martin Luther’s personal crisis and his theological breakthrough of “justification by faith alone”.
- Details the “accidental revolution” sparked by his protest against indulgences in 1517 and his eventual defiance of the Pope and Emperor.
- Discusses Huldrych Zwingli’s independent emergence in Zürich and the rise of radical Anabaptist challenges.
Chapter 4: Wooing the Magistrate, 1524–40
- Analyzes the aftermath of the Peasants’ War (1524-5), which led magisterial reformers like Luther to ally with secular princes for order.
- Traces the birth of regional “state churches” (Landeskirchen) and the hardening of confessional identities.
- Recounts the apocalyptic disaster of the Anabaptist kingdom in Münster.
Chapter 5: Reunion Deferred: Catholic and Protestant, 1530–60
- Discusses southern European religious revival, including the Spirituali in Italy and the founding of the Jesuits.
- Highlights failed attempts at reconciliation, such as the Regensburg Colloquy of 1541.
- Covers John Calvin’s establishment in Geneva and the creation of a disciplined Reformed model that spread throughout Europe.
Chapter 6: Reunion Scorned, 1547–70
- Details the Schmalkaldic Wars and the 1555 Peace of Augsburg, which legally recognized Lutheranism but ignored Reformed Protestantism.
- Covers the restoration of Catholicism in England under Mary I and the subsequent Protestant settlement under Elizabeth I.
- Summarizes the final session of the Council of Trent, which defined modern “Tridentine” Catholicism and rejected compromise with Protestants.

Part II: Europe Divided: 1570–1619

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