When about twelve years old, Muhammad accompanied his uncle, Abu Thaleb, into Syria on a mercantile expedition. His first visit to that country, and his experiences there, A.D. 582. His presence, during the sacrilegious war, at a battle between certain tribes at or near Okatz, where he assisted his uncle, who took part in the fight. His attendance at sundry preachings and poetical and eloquent recitations at Okatz, where it is said he imbibed the first lessons of the art of poetry and the power of rhetoric, and also acquired certain religious sentiments. His life as a shepherd in the neighbourhood of Mecca, and the ideas that such a lonely life, face to face with nature, would perhaps inspire. His acquisition of the title of Al-Amin, the Trustworthy. His second visit to Syria, when twenty-five years old (A.D. 595), on a mercantile expedition, as agent to the widow Khadijah, and his acquisition of religious impressions there. His successful business, and his marriage on his return to Khadijah, fifteen years his senior in age, A.D. 595. Six children born to Muhammad by Khadijah, most of whom died young. The rebuilding of the Kaabah in A.D. 605, in which Muhammad accidentally takes a prominent part. His solitary contemplations and studies, from the age of twenty-five to forty, at Mecca, and in the cave on Mount Hira near Mecca. Here it is important to bear in mind the foregoing experiences in the life of Muhammad as we approach the period of his alleged revelations. There can be no doubt that by this time he had acquired, as well through his own observation and inquiry, as through intimate converse with Bara-kah, reputed the most learned Arab of the age, considerable acquaintance with the dogmas of Judaism and Christianity; that he had some knowledge of the Bible, the Talmud, and the Gospels; that he was thoroughly versed in Arab legendary lore, and that, being gifted with a ready flow of speech, an ardent imagination, together with a bold, enterprising spirit, he was well equipped for carrying out that grand social and religious revolution among his countrymen which he contemplated. His yearnings after religious truth and his first poetic productions. His mental depressions. His first inspirations from the angel Gabriel, A.D. 610. His account of his visions to his wife, who became the first convert to al-Islam, or the creed of Muhammad. His next converts were Ali, his adopted son and cousin; Zaid-bin-Harithah, also an adopted son; Warakah; and Abdul-Kaabah-bin-Kuhafah, one of the most influential and learned men of Mecca, on conversion named Abd Allah, and afterwards called Abu Bakr, 'The Father of the Virgin,' 'The Companion of the Cave,' 'The Second of the Two,' 'The True,' 'The Sighing,' etc., and who eventually became the first Khalifah, or Successor. Other conversions followed; viz., Saad, Zobeir, Talha; Othman bin Affan, the third Khalifah, or Successor, after Abu Bakr and Omar; Abdar-Rahman, and several more.