6:5
فَقَدْ كَذَّبُوا۟ بِٱلْحَقِّ لَمَّا جَآءَهُمْ ۖ فَسَوْفَ يَأْتِيهِمْ أَنۢبَـٰٓؤُا۟ مَا كَانُوا۟ بِهِۦ يَسْتَهْزِءُونَ
faqad kadhabū bil-ḥaqi lammā jāahum fasawfa yatīhim anbāu mā kānū bihi yastahziūna
So they denied the truth when it came to them, but the very thing they laughed at will be brought home to them.
Indeed, they rejected the truth (the Qur’ân and Muhammad صلى الله عليه وسلم) when it came to them, but there will come to them the news of that (the torment) which they used to mock at.