His marriage with Chadidja lasted till he was fifty years of age, when he lost her and at the same time his uncle Abu Talib. During the whole period of his marriage with Chadidja, who was much older than himself, he lived in close union with her—what seems to have been, at least in regard to this relationship—a virtuous and religious life. Mohammed’s education had been much neglected. His country at the time was in a most uncivilised condition, destitute of science, arts, and letters. Bardship alone was in repute, and for this Mohammed had no gift, though he had a great gift of oratory. The art of writing was little diffused; it is doubtful whether Mohammed even in his later years possessed it. He was acquainted with Jewish and Christian doctrines only by oral information. The great authority of St. John of Damascus says that he lighted upon the Old and New Testaments by conferences with an Arian monk, and thus drew up his own religion. He was about forty years of age when he began to carry out a design to restore what he thought the religion of Abraham, and to destroy the idolatry into which his countrymen had fallen. He met with small success and much opposition in this attempt until in the eleventh year of the mission which he claimed as prophet, and the fifty-first of his life, a most marked change in his personal conduct and in the conditions of his life took place. The chief men at Mecca had generally refused to receive him as a prophet and to accept the reformation of religion which he proposed to them. In his first years he had confined his revelations to his nearest relations and friends. He had gained Abu Bekr and his young cousin Ali, an uncle Hamza, named for his valour “the Lion of God,” and above all, Omar, at first his opponent, but when converted the most energetic character among all the companions of the prophet, and the strongest support of Islam. On the whole, however, things had gone so far against him that he retired secretly, together with Abu Bekr, from Mecca to Medina. This event, termed The Flight, took place in September, 622, from which year his followers count their time. It may be taken as indeed the time in which his full character as prophet came forth to light. Henceforth he appeared rather as the preacher of a new religion than as the restorer of what he called the religion of Abraham. The most important principle laid down by him from the time of his migration from Mecca to Medina was that he then first permitted in the name of God war against unbelievers. He afterwards made this a holy duty. It was considered the first of virtues to fight the enemies of Islam. To those who fell in such a battle he promised the highest joys of paradise; to those who rejected him he threatened a shameful death by the disposition of God.(86)