"I have heard much of you among the traders. They say that though you are so young you are a good caravan manager and can be trusted. Are you willing to take charge of my caravans and give your whole time and service to me?" Mohammed was delighted. "I accept your offer," said he, "and I shall do all I can to serve and please you." Khadijah then engaged him as the manager of her business; and he served her well and faithfully. She thought a great deal of him, and he was much attracted to her, and soon they came to love one another and were married. As he was now the husband of a rich woman he did not need to work very hard. He still continued to attend to his wife's business; but he did not make so many journeys as before. He spent much of his time in thinking about religion. He learned all that he could about Judaism and Christianity; but he was not satisfied with either of them. At that time most of the people of Arabia worshiped idols. Very few of them were Christians. Mohammed was very earnest and serious. In a cave on Mount Hira, near Mecca, he spent several weeks every year in prayer and religious meditation. He declared that, while praying in his cave, he often had visions of God and heaven. He said that many times the angel Gabriel appeared to him and revealed to him the religion which he afterwards taught his followers. As he himself could not write, he committed to memory all that the angel told him, and had it written in a book. This book is called the "Koran," which means, like our own word Bible, the "Book." The Koran is the Bible of Mohammedans. III When Mohammed returned home after the angel had first spoken to him, he told his wife of what he had seen and heard. She at once believed and so became a convert to the new religion. She fell upon her knees at the feet of her husband and cried out: "There is but one God. Mohammed is God's prophet." Mohammed then told the story to other members of his family. Some of them believed and became his first followers. Soon afterwards he began to preach to the people. He spoke in the market and other public places. Most of those who heard him laughed at what he told them; but some poor people and a few slaves believed him and adopted the new religion. Others said he was a dreamer and a fool. Mohammed, however, paid no heed to the insults he received. He went on telling about the appearance of Gabriel and preaching the doctrines which he said the angel had ordered him to teach the people. Often while speaking in public Mohammed had what he called a "vision of heavenly things." At such times his face grew pale as death, his eyes became red and staring, he spoke in a loud voice, and his body trembled violently. Then he would tell what he had seen in his vision.