Ottoman Empire in 1663

Efforts to heal the schism and reunify the two churches continued throughout the 13th and 14th centuries, but when the Ottomans, led by Muhammad II, conquered Constantinople in 1453 and renamed the city Istanbul, all possibility of reunion was lost. From this point forward, Christianity would be divided into an eastern Church and a western Church.

Church door in Wittenberg, Germany onto which Luther nailed his 95 theses Source: http://www.flickr.com/photos/dccarbone/4263880541/Less than a century passed before a teacher and monk named Martin Luther famously nailed his list of ninety-five propositions or "theses" to the castle-church door at Wittenberg in Saxony in 1517. Luther's list addressed Church practices and the nature of faith. Luther believed passionately that truth should be sought in scripture, and that Church teaching is to be based on and accountable to scripture. His ideas echoed those of Jan Hus and John of Wycliffe, two 14th-century theologians who protested Church corruption and the abuse of authority. John Wycliffe Source: Public DomainMoreover, Wycliffe wrote that Christians need nothing more than the example of scripture, and that they should be able to read the Bible in their own languages.

first pages of the 95 theses, printed in Latin Source: Public DomainAlthough Luther intended his propositions as an invitation to debate within the Church, the theses prompted the second great split in Christianity, the Protestant Reformation. Luther acted at a time when the recently-invented printing press made it possible to reprint his theses. In six short years, 1300 copies were printed. The widespread dissemination of Luther's ideas made it difficult for the Church to simply reprimand him and sweep the problem under the carpet. Northern Europeans and their leaders, weary of Church corruption and yearning for independence from Rome, embraced Luther's criticisms. An airing of controversial tenets on a church door culminated in catastrophic violence and persecution, and a permanent splintering of the western Church.

Henry VIII Source: http://www.flickr.com/photos/mademoiselleboleyn/4199880355/Reformation ideas infiltrated England, and in 1533, King Henry VIII severed the English Church from Rome's authority, thus creating the Church of England. In 1555, the Treaty of Augsburg created Lutheranism, permanently breaking this group away from Roman authority. More schisms followed. Huldreich Zwingli, the Anabaptists, and John Calvin all led reformation movements in Switzerland. Calvinists in England were known as the Puritans, proclaiming their desire to purify the Church of any reminders of Roman Catholicism.

In response to this tide of schisms, the Catholic Church tacitly accepted Protestant criticisms of corruption and undertook its own reformation. It initiated steps to bring increased integrity and accountability to seminaries, dioceses, and monasteries. Christianity emerged from the paroxysm of reformation ready to take great strides in mission, global exploration, and conquest.

Major Branches within Christianity

Study Questions:
1.     Was the earliest split of Christianity more about location or language? Explain.
2.     What was the Great Schism? What was the result?
3.     How did the crusades contribute to schisms of Christianity?
4.     Who was Martin Luther? What movement did he found and why?

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