Word by Word Analysis

أَفَمَن كَانَ عَلَىٰ بَيِّنَةٍ مِّن رَّبِّهِۦ وَيَتْلُوهُ شَاهِدٌ مِّنْهُ وَمِن قَبْلِهِۦ كِتَـٰبُ مُوسَىٰٓ إِمَامًا وَرَحْمَةً ۚ أُو۟لَـٰٓئِكَ يُؤْمِنُونَ بِهِۦ ۚ وَمَن يَكْفُرْ بِهِۦ مِنَ ٱلْأَحْزَابِ فَٱلنَّارُ مَوْعِدُهُۥ ۚ فَلَا تَكُ فِى مِرْيَةٍ مِّنْهُ ۚ إِنَّهُ ٱلْحَقُّ مِن رَّبِّكَ وَلَـٰكِنَّ أَكْثَرَ ٱلنَّاسِ لَا يُؤْمِنُونَ 17

So is one who [stands] upon a clear evidence from his Lord [like the aforementioned]? And a witness from Him follows it, and before it was the Scripture of Moses to lead and as mercy. Those [believers in the former revelations] believe in it [i.e., the Qur’ān]. But whoever disbelieves in it from the [various] factions - the Fire is his promised destination. So be not in doubt about it. Indeed, it is the truth from your Lord, but most of the people do not believe.