ذَٰلِكَ بِأَنَّهُمْ شَآقُّوا ٱللَّهَ وَرَسُولَهُۥ ۖ وَمَن يُشَآقِّ ٱللَّهَ فَإِنَّ ٱللَّهَ شَدِيدُ ٱلْعِقَابِ

Thalika bi-annahum shaqqoo Allahawarasoolahu waman yushaqqi Allaha fa-inna Allahashadeedu alAAiqab

That is because they opposed Allāh and His Messenger. And whoever opposes Allāh - then indeed, Allāh is severe in penalty.