وَقَالُوا لَوْلَا يَأْتِينَا بِآيَةٍ مِّن رَّبِّهِ ۚ أَوَلَمْ تَأْتِهِم بَيِّنَةُ مَا فِي الصُّحُفِ الْأُولَىٰ (133)
(20:133) They say, "Why does he not bring us a Sign from his Lord?" Has not a clear Sign come to them containing all the teachings of the former Scriptures? *116
*116) This means that the Qur'an itself is a great miracle, for though it is being presented by an unlettered person from among them, it contains the essence of the teachings and guidance of all tire previous Divine Books. Not only this: it makes those teachings and guidance so plain and clear that even a simple man of the desert can benefit from them.