4ذٰلِكَ بِأَنَّهُم شاقُّوا اللَّهَ وَرَسولَهُ ۖ وَمَن يُشاقِّ اللَّهَ فَإِنَّ اللَّهَ شَديدُ العِقابِRashad KhalifaThis is because they opposed GOD and His messenger. For those who oppose GOD and His messenger, GOD is most strict in enforcing retribution.