disbelief and materialism

وَقَالُوٓا۟ إِنْ هِىَ إِلَّا حَيَاتُنَا ٱلدُّنْيَا وَمَا نَحْنُ بِمَبْعُوثِينَ

And they say, "There is none but our worldly life, and we will not be resurrected."