" The Qur’ān began by criticizing two closely related aspects of that society: the polytheism or multiplicity of gods which was symptomatic of the segmentation of society, and the gross socioeconomic disparities that equally rested on and perpetuated a pernicious divisiveness of mankind. The two are obverse and converse of the same coin: only God can ensure the essential unity of the human race as His creation, His subjects, and those responsible finally to Him alone. The economic disparities were most persistently criticized, because they were the most difficult to remedy and were at the hear of social discord—although tribal rivalries, with their multiple entanglements of alliance, enmity, and vengeance, were no less serious, and the welding of these tribes into a political unity was an imperative need. Certain abuses of girls, orphans, and women, and the institution of slavery demanded desperate reform. "