وَلَقَدْ أَرَيْنَاهُ آيَاتِنَا كُلَّهَا فَكَذَّبَ وَأَبَىٰ (56)
(20:56) We showed all (kinds of) Our Signs *29 to Pharaoh, but he went on treating them as falsehood and refused to believe.
*29) "Signs" comprised those arguments which were based on natural phenomena and human life and those miracles which were given to Prophet Moses. These arguments are contained in the speeches of Prophet Moses which he delivered before Pharaoh, and the miracles which he showed and are mentioned at several places in the Qur'an.