Ninety-five Theses

The Ninety-five Theses, or the Disputation on the Power and Efficacy of Indulgences, is a list of academic propositions. Martin Luther wrote them in 1517. At the time, Luther was a professor of moral theology at the University of Wittenberg in Germany.

While intended for academic debate, these ideas are seen as the spark for the Protestant Reformation. This movement led to the birth of Protestantism. Although various proto-Protestant groups existed before this, Luther's writing became a major turning point.

To understand the Theses, one must understand the Catholic system of salvation in the 16th century. In this system, Christians believed that sinning required repentance and penance. While confession provided forgiveness from eternal punishment in hell, it did not remove all consequences. A person might still face temporal punishment for their sins. This punishment could be satisfied through works of mercy during life. If not satisfied, it was believed to occur in purgatory. Purgatory was viewed as a place between heaven and hell where souls were purified.

Indulgences were used to address this temporal punishment. An indulgence was a way to lessen the punishment required for sins. The Roman Catholic Church allowed clergy to grant these to the faithful. Some popes granted plenary indulgences, which provided complete satisfaction for remaining punishment. These could be purchased for oneself or for loved ones believed to be in purgatory. This practice created a specific economic cycle within the church. A famous saying from that era claimed a soul would spring from purgatory as soon as a coin rang in the coffer.

In 1515, Pope Leo X granted a plenary indulgence to fund the construction of St. Peter's Basilica in Rome. This specific indulgence applied to many sins, including theft and adultery. Johann Tetzel was commissioned to preach this indulgence in 1517. His campaign near Wittenberg caused many people to travel to purchase these certificates. Luther became concerned when his parishioners claimed they no longer needed to repent. They believed the purchase of an indulgence replaced the need to change their lives. Luther argued that true repentance was an inner struggle, not an external purchase.

The Theses contain specific arguments against the practice and its theology. In the first thesis, Luther stated that Christ's call to "Repent" meant a lifelong struggle for believers. He argued that the pope could only release people from punishments the church had administered. Luther denied that the pope had authority over people in purgatory. He also attacked the idea that indulgences made repentance unnecessary. He believed that a truly repentant person would not seek an indulgence to avoid God's punishment. Instead, he suggested that giving to the poor was far more important than buying indulgences.

Luther also critiqued the doctrine of the treasury of merit. This doctrine was the theological basis for indulgences. He argued that the true treasure of the church was the gospel of Jesus Christ. He used metaphors to describe the gospel as a net to catch people, rather than a net to catch wealth. Luther expressed concern that preachers were promoting greed rather than grace. He even suggested that if the pope knew the truth, he would rather see St. Peter's Basilica burn down than be built using the flesh and bones of his sheep.

The impact of the Theses extended into politics and economics. Many political rulers wanted to control indulgences to protect their local economies. They did not want money for religious certificates to leave their territories. For example, Duke George of Electoral Saxony prohibited indulgences. Other thinkers had also questioned these practices earlier. John Wycliffe denied the pope's jurisdiction over purgatory, and Jan Hus advocated for stricter penance. Luther's work connected these theological questions to broader social and political shifts.