﴿ لَا يُؤْمِنُونَ بِهِۦ ۖ وَقَدْ خَلَتْ سُنَّةُ ٱلْأَوَّلِينَ ﴾

“who do not believe in it, although the way which those [evildoers] of olden times had to go has long been within their ken.”

(They believe not therein) such that they do not believe in Muhammad (pbuh) or in the Qur'an, or that chastisement will descend upon them, (though the example of the men of old have gone before) when they denied the messengers, just as your people have denied you, and Allah's norm concerning them was to punish and destroy them because of their denial.