Verse 53

ذَٰلِكَ بِأَنَّ ٱللَّهَ لَمْ يَكُ مُغَيِّرًا نِّعْمَةً أَنْعَمَهَا عَلَىٰ قَوْمٍ حَتَّىٰ يُغَيِّرُوا۟ مَا بِأَنفُسِهِمْ وَأَنَّ ٱللَّهَ سَمِيعٌ عَلِيمٌ

This is because God does not change the blessing He has bestowed upon a people until they change themselves, and God is All Hearer, All Knowing.