﴿ فَلَمَّا جَآءَهُمُ ٱلْحَقُّ مِنْ عِندِنَا قَالُوٓا۟ إِنَّ هَٰذَا لَسِحْرٌۭ مُّبِينٌۭ ﴾

“And so, when the truth came to them from Us, they said, "Behold, this is clearly nothing but sorcery!"”

Because of their arrogance, Pharaoh and the chiefs of his people did not accept the word of Moses and Aaron. They judged all matters by the standard of power and glory instead of seeing them in the light of reason. Due to this self-established standard, they considered themselves of a high status and Moses and Aaron of a lower status. This mentality prevented them from accepting the Truth as presented to them by Moses and Aaron whom they regarded as inferior persons.