Word by Word Analysis

فَأَصَابَهُمْ سَيِّـَٔاتُ مَا عَمِلُوا۟ وَحَاقَ بِهِم مَّا كَانُوا۟ بِهِۦ يَسْتَهْزِءُونَ 34

So they were struck by the evil consequences of what they did and were enveloped by what they used to ridicule.