November 27
Pope Urban II Calls for First Crusade at Clermont
Pope Urban II's sermon on the final day of the Council of Clermont rallied Western Christians to aid the Byzantine Empire and reclaim Jerusalem, igniting the First Crusade.
Summary
In the late 11th century, the Byzantine Empire faced mounting pressure from Seljuk Turkish advances in Anatolia, prompting Emperor Alexius I to seek military aid from Western Christendom. Pope Urban II convened the Council of Clermont in France from November 18 to 28, 1095, primarily to address church reforms and the Truce of God. On the final day, November 27, Urban delivered a powerful sermon to clergy and lay nobles assembled outdoors, urging Christians to cease internal conflicts and march to the Holy Land to reclaim Jerusalem and aid Eastern Christians. Contemporary accounts, including that of Fulcher of Chartres who was present, describe the speech invoking religious duty and promising spiritual rewards. The response was immediate and overwhelming, with cries of "Deus vult" echoing as thousands pledged to take the cross.
Context
By the late eleventh century, the Seljuk Turks had overrun much of Anatolia, placing sustained pressure on the Byzantine Empire's eastern frontiers and disrupting long-established Christian pilgrimage routes to sites in the Holy Land. Emperor Alexius I Comnenus responded by seeking military support from Latin Christendom, dispatching envoys who reached Pope Urban II at the Council of Piacenza earlier in 1095.
What Happened
Urban, elected pope in 1088 as a committed reformer in the mold of Gregory VII, convened the Council of Clermont in Auvergne, France, from mid-November 1095. The gathering of several hundred clerics and nobles focused chiefly on enforcing church discipline, renewing the Truce of God to curb noble feuding, and settling regional disputes, including the excommunication of King Philip I of France.
Aftermath
On 27 November, Urban addressed a large outdoor crowd of clergy and lay nobles. Drawing on the Byzantine appeal and longstanding concerns over pilgrim safety, he urged participants to redirect their energies from internal conflicts toward assisting Eastern Christians and liberating Jerusalem, promising remission of sins for those who undertook the journey.
Legacy
Contemporary accounts, above all that of Fulcher of Chartres who attended the council, record an immediate and fervent response, with many shouting "Deus vult" and vowing to take the cross. Urban appointed Bishop Adhemar of Le Puy as his legate to organize the expedition, which began departing in 1096.
Why It Matters
The sermon directly ignited the First Crusade, leading to the capture of Jerusalem in 1099 and the establishment of Crusader states that altered Mediterranean power dynamics for centuries. It institutionalized the concept of holy war in Western Christianity, influencing subsequent crusades and European expansionist ideologies while fostering long-term cultural and economic exchanges between East and West.
Related Questions
Why did the Byzantine emperor seek help from the pope?
Seljuk Turkish conquests in Anatolia threatened Constantinople and Christian pilgrims, prompting Alexius I to request Western knights.
What was the main purpose of the Council of Clermont before the crusade call?
The synod concentrated on church reforms, renewal of the Truce of God, and resolution of local ecclesiastical issues.
Who recorded the most reliable version of Urban's speech?
Fulcher of Chartres, an eyewitness cleric, provided the account generally viewed as the most trustworthy.
What immediate effect did the sermon have?
Thousands pledged to join the expedition, with the cry "Deus vult" becoming the rallying slogan as news spread across Europe.
How did the event connect to later developments?
It initiated the First Crusade, which captured Jerusalem in 1099 and led to the creation of Crusader states in the Levant.
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Sources
- Pope Urban II orders first Crusade, History.com. Accessed 2026-07-07.
- Council of Clermont, Wikipedia. Accessed 2026-07-07.