irrationality of disbelief

وَيَعْبُدُونَ مِن دُونِ ٱللَّهِ مَا لَا يَنفَعُهُمْ وَلَا يَضُرُّهُمْ ۗ وَكَانَ ٱلْكَافِرُ عَلَىٰ رَبِّهِۦ ظَهِيرًا

But they worship rather than Allāh that which does not benefit them or harm them, and the disbeliever is ever, against his Lord, an assistant [to Satan].

إِنَّكُمْ لَفِى قَوْلٍ مُّخْتَلِفٍ

Indeed, you are in differing speech.

فَبِأَىِّ ءَالَآءِ رَبِّكُمَا تُكَذِّبَانِ

So which of the favors of your Lord would you deny?