this is because allah has never changed a favor which he has conferred upon a people until they change their own condition and because allah is hearing knowing in the manner of the people of firon and those before them they rejected the communications of their lord therefore we destroyed them on account of their faults and we drowned firons people and they were all unjust.
ذلك بأن الله لم يك مغيرا نعمة أنعمها على قوم حتى يغيروا ما بأنفسهم وأن الله سميع عليم كدأب آل فرعون والذين من قبلهم كذبوا بآيات ربهم فأهلكناهم بذنوبهم وأغرقنا آل فرعون وكل كانوا ظالمين