Because they are the one who fail to recognise HIS at first place..and second they oppose HIS message...
GOD is the CREATOR of each and everything you see and things you cannot see...Being the Supreme CREATOR HE can bestow you with HIS mercy and the same time punish you with HIS wrath....
HE can do anything HE wishes..and there is nothat that can stop HIM...
therefore being HIS creation all we need to do is THANK HIM for his Mercy and fear HIM alone....
