In the last quarter of the sixth century occurred an event which was destined to change the history not only of Europe, but of the whole world. One summer day in the year 581, a caravan of camels laden with the costly products of southern Arabia appeared in the little town of Busra. The leader of the caravan was accompanied by a boy who was the nephew of the guardian of the Caaba, the sacred Temple of the Arabs in Mecca. The boy's name was Mohammed. During his stay in Busra Mohammed was entertained in the Nestorian monastery. He had many conversations with the monks and became deeply interested in their religious and philosophical views, particularly in their aversion to idolatry and their revolt against the carnalized Trinity of the orthodox Christian Church. As Mohammed grew to manhood he came more and more under the influence of the Nestorians. Finally he retired to a grotto and gave himself up to meditation. From this silent communication with his own thoughts one conviction was born: the Unity of God. He then left his retreat, determined to devote his whole life to the promulgation of that one truth. By the end of six years he had gained only 1500 converts. But when he departed from Medina on his last pilgrimage to Mecca, he was accompanied by 114,000 followers..
Like Jesus and the Buddha before him, Mohammed had no intention of founding a new religion. His purpose was to reform Christianity and Judaism, to destroy the sectarianism and idolatry into which these two religions had fallen. For many centuries the Muslims considered their religion merely as an offshoot of Nestorianism. Not until it had become intoxicated with its own success did Islam repudiate the original intentions of its founder and assert itself as a distinct revelation.