The Qur’an had an idealistic purpose: to make men and women equal. Because of this, the Qur’anic legislation about women was actually carefully designed to protect them from social practices (unlimited polygamy, concubinage, etc) which were already prevalent during the pre-IslamicArabia. Wearing hijab, at the time, basically liberated women from being regarded as sex-objects. They were asked to behave in a way that befits a self-respecting and secure human being