﴿ إِنَّ ٱلَّذِينَ ءَامَنُوا۟ وَٱلَّذِينَ هَادُوا۟ وَٱلصَّٰبِـُٔونَ وَٱلنَّصَٰرَىٰ مَنْ ءَامَنَ بِٱللَّهِ وَٱلْيَوْمِ ٱلْءَاخِرِ وَعَمِلَ صَٰلِحًۭا فَلَا خَوْفٌ عَلَيْهِمْ وَلَا هُمْ يَحْزَنُونَ ﴾

“for, verily, those who have attained to faith [in this divine writ], as well as those who follow the Jewish faith, and the Sabians, and the Christians - all who believe in God and the Last Day and do righteous deeds - no fear need they have, and neither shall they grieve.”

Surely those who believe and those of Jewry this constitutes the subject of the clause namely the Jews and the Sabaeans a sect among them and the Christians and what follows substitutes for the above subject whoever of them believes in God and the Last Day and behaves righteously — no fear shall befall them neither shall they grieve in the Hereafter this fa-lā khawfun ‘alayhim wa-lā hum yahzanūn ‘no fear shall befall them neither shall they grieve’ is the predicate of the subject and also indicates the predicate of the clause beginning with inna ‘surely’.