Tafsir of Fussilat 41:4

بشيرا ونذيرا

Giving glad tidings and warning, means, sometimes it brings glad tidings to the believers, and sometimes it brings a warning to the disbelievers.

فٲعرض أكثرهم فهم ﻻأ يسمعون

but 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