Protestant Reformation

The Protestant Reformation was a sixteenth-century movement that challenged Roman Catholic authority and produced enduring Protestant churches. It reshaped Western Christianity and European politics.

Martin Luther: A German theologian whose criticism of indulgences helped launch the Reformation. His 1517 challenge to indulgence preaching became the movement’s defining early protest.
Justification by faith: The doctrine that sinners are made right with God through faith rather than meritorious works. It became a central point of disagreement between Lutherans and Roman Catholic teaching.
Philip Melanchthon: A German scholar and theologian who helped formulate early Lutheran teaching. He drafted the Augsburg Confession and shaped Lutheran institutions.
Roman Catholic Church: The largest Christian church, headed by the pope and grounded in scripture and sacred tradition. Its authority and doctrines were the principal targets of Protestant reformers.
French Wars of Religion: A series of conflicts between Catholics and Protestants in France from 1562 to 1598. They show how Reformation divisions could destabilize a kingdom for decades.
Ninety-five Theses: Martin Luther’s 1517 propositions criticizing the sale and theology of indulgences. They gave the Reformation its best-known starting point, though reform debates had earlier roots.
Sola scriptura: The principle that Scripture is the highest authority for Christian doctrine. Reformers used it to challenge claims of church authority beyond the Bible.
John Calvin: A French theologian whose writings and leadership shaped Reformed Protestantism. His Geneva-based reforms created a major tradition distinct from Lutheranism.
Counter-Reformation: The Catholic renewal and response to Protestant expansion, especially from the mid-sixteenth century. It shows how Catholic institutions answered Protestant challenges through reform and reaffirmation.
Thirty Years' War: A European conflict fought from 1618 to 1648, initially centered on religious and political disputes in the Holy Roman Empire. Its devastation reflected conflicts intensified by the Reformation’s lasting confessional divisions.

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