Accountability and the Last Hour

أَوَلَمْ يَنظُرُوا۟ فِى مَلَكُوتِ ٱلسَّمَـٰوَٰتِ وَٱلْأَرْضِ وَمَا خَلَقَ ٱللَّهُ مِن شَىْءٍ وَأَنْ عَسَىٰٓ أَن يَكُونَ قَدِ ٱقْتَرَبَ أَجَلُهُمْ ۖ فَبِأَىِّ حَدِيثٍۭ بَعْدَهُۥ يُؤْمِنُونَ

Do they not look into the realm of the heavens and the earth and everything that Allāh has created and [think] that perhaps their appointed time has come near? So in what statement [i.e., message] hereafter will they believe?