god has revealed the best reading material in the form of a book with similar passages which refer to each other and make the skins of those who fear their lord shiver. then their skins and hearts incline to the remembrance of god. this is the guidance of god. he guides whomever he wants. no one can guide those whom god has caused to go astray.
الله نزل أحسن الحديث كتابا متشابها مثاني تقشعر منه جلود الذين يخشون ربهم ثم تلين جلودهم وقلوبهم إلى ذكر الله ذلك هدى الله يهدي به من يشاء ومن يضلل الله فما له من هاد