allah has sent down the best of books which is consistent throughout the one with paired statements the hairs on the skins of those who fear their lord stand on end with it then their skins and their hearts soften inclined towards the remembrance of allah this is the guidance of allah he may guide whomever he wills with it and whomever allah sends astray there is no guide for him.
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