The document defines key terms related to the Protestant Reformation such as Protestant, sale of indulgences, Great Schism, Martin Luther, 95 Theses, Desiderius Erasmus, John Calvin, predestination, and Ignatius of Loyola. It provides brief explanations of individuals like Luther, Erasmus, and Calvin who were influential religious reformers and theologies they promoted such as predestination. Additionally, it defines concepts important to the Reformation period like the schism in the Catholic Church and Luther's 95 Theses which criticized corrupt practices of the Catholic Church.
