Protestantism is a branch of Christianity that emphasizes justification by God through faith alone, the teaching that salvation comes by unmerited divine grace, the priesthood of all believers, and the Bible as the sole infallible source of authority for Christian faith and practice. The five solae summarize the basic theological beliefs of mainstream Protestantism.
The door to All Saints' Church in Wittenberg, where Martin Luther allegedly posted his Ninety-five Theses in 1517 detailing his concerns with what he saw as the Catholic Church's abuse and corruption. The Ninety-five Theses gave rise to Christian Protestantism as one of the world's primary religions, making Wittenberg the "cradle of Protestantism".
Memorial Church, finished and consecrated 1904, in Speyer, Germany commemorates the Protestation.
The Protesting Speyer, part of the Luther Monument in Worms, Germany
Two central figures of the Protestant Reformation, Martin Luther and John Calvin, depicted on a church pulpit; both Luther and Calvin emphasized making preaching a centerpiece of worship.
Justificatio sola fide, meaning justification by faith alone, is a soteriological doctrine in Christian theology commonly held to distinguish the Lutheran and Reformed traditions of Protestantism, among others, from the Catholic, Eastern Orthodox, Oriental Orthodox, Assyrian and Anabaptist churches. The doctrine asserts that it is on the basis of faith alone that believers are made right of sin ; and not on the basis of what Paul the Apostle calls "works of the law", which sola fide proponents interpret as including not only moral, legal or ceremonial requirements but any good works or "works of charity."
Jovinian has been argued to have taught similar views of justification as the Protestant reformers.
Jacques Lefèvre d'Étaples taught the doctrine of justification by faith alone before Martin Luther
1861 painting of Luther discovering the Sola fide doctrine at Erfurt