Human disbelief and heedlessness

فَكَذَّبُوهُ فَأَهْلَكْنَـٰهُمْ ۗ إِنَّ فِى ذَٰلِكَ لَـَٔايَةً ۖ وَمَا كَانَ أَكْثَرُهُم مُّؤْمِنِينَ

And they denied him, so We destroyed them. Indeed in that is a sign, but most of them were not to be believers.

إِنَّ ٱلسَّاعَةَ لَـَٔاتِيَةٌ لَّا رَيْبَ فِيهَا وَلَـٰكِنَّ أَكْثَرَ ٱلنَّاسِ لَا يُؤْمِنُونَ

Indeed, the Hour is coming - no doubt about it - but most of the people do not believe.