1095 · Clermont (modern Clermont-Ferrand), France
Council of Clermont
In 1095, Pope Urban II preached at the Council of Clermont in France, calling on Western Christians to aid the Byzantine Empire and recapture the Holy Land, launching the First Crusade and two centuries of armed pilgrimage.
The Byzantine emperor Alexios I had sent a request to the West for military help against the Seljuk Turks, who had conquered much of Anatolia and were threatening Constantinople. Pope Urban II saw an opportunity. On November 27, 1095, at the Council of Clermont in central France, he delivered a speech to a large crowd of clergy and laypeople that changed the course of European history. No exact transcript survives — the versions we have were written down later and differ from each other — but the core message is clear. Urban described the suffering of Eastern Christians and the desecration of holy sites in Jerusalem. He called on the knights of Europe to stop fighting each other and turn their swords against the enemies of Christ. He promised that those who went on this armed pilgrimage would receive remission of sins. The crowd, according to every account, responded with the cry 'Deus vult' — God wills it. Within months, armies were forming across France, Germany, and Italy. The response was far larger and more chaotic than Urban had anticipated. Before the main armies departed, a disorganized mob led by Peter the Hermit set out on what historians call the People's Crusade, which ended in massacre and disaster. The organized crusade that followed captured Jerusalem in July 1099 after a brutal siege. Urban died two weeks later, before the news reached him. He had set in motion a movement that would define Western Christendom for two centuries, produce both heroism and atrocity, and leave scars on Christian-Muslim relations that have never fully healed.
Why it matters
Launched the Crusading movement that would shape European politics, theology, and Christian-Muslim relations for centuries, fundamentally altering the medieval world.
What Happened
On November 27, 1095, Pope Urban II addressed a large gathering at the Council of Clermont and called on Western Christians to take up arms to help the Byzantine Empire and liberate the Holy Land from Muslim control. He promised spiritual rewards for participants. The response was overwhelming and immediate, with the cry 'God wills it' echoing from the crowd. Multiple armies formed across Western Europe over the following year, and the First Crusade ultimately captured Jerusalem in July 1099.
Why It Still Matters
Clermont launched a movement that shaped the Catholic Church for centuries. The Crusades produced military religious orders like the Templars and Hospitallers, fueled a building boom of castles and churches, and created lasting connections between Europe and the Middle East. They also produced violence against Jews in Europe, massacres of civilians in the Holy Land, and a legacy of mistrust between Christians and Muslims that persists today. Catholics continue to wrestle with this history, acknowledging both the genuine piety of many crusaders and the grave moral failures that accompanied the movement.