Who urged the European nights to join the crusades?

Pope Urban II urged European knights to join the Crusades. In 1095, he called for the First Crusade during the Council of Clermont, appealing to their sense of duty, religious zeal, and the promise of spiritual rewards. His impassioned speech aimed to unite Christendom against Muslim forces occupying the Holy Land, promoting the idea of reclaiming Jerusalem. This call to arms sparked a significant military campaign that would have lasting impacts on Europe and the Middle East.