بَشِيرًا وَنَذِيرًاGiving glad tidings and warning,means, sometimes it brings glad tidings to the believers, and sometimes it brings a warning to the disbelievers.فَأَعْرَضَ أَكْثَرُهُمْ فَهُمْ لَاأ يَسْمَعُونَbut most of them turn away, so they hear not.means, most of the Quraysh did not understand anything of it at all, despite the fact that it was so clear