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Luther and the Doctrine of Sola Scriptura The doctrine that Scripture is the Christian’s only infallible rule of faith was popularized and promoted by Martin Luther, who, the story goes, affixed his Ninety-five Theses to the church door at Wittenberg’s Castle Church in 1517. His Theses put forth a series of propositions for debate, focusing prominently on the doctrine of indulgences—see the Catechism of the Catholic Church(CCC), paragraph 1471—which he sought to challenge. Since indulgen …

The Question of "Where is that in the Bible?" “Where is that in the Bible?” This is the most common question I receive when I discuss the Catholic faith with Protestants. They ask me questions like: “Where is purgatory in the Bible? Or the Mass? Or the pope? Or the rosary?” These questions assume that Christians should only believe a doctrine if it is explicitly taught in Scripture—what is called sola scriptura (“by Scripture alone”). The 1647 Protestant Westminster Confession of Faith expr …