إِنَّ رَبَّهُم بِهِمْ يَوْمَئِذٍ لَّخَبِيرٌۢ ١١
Sentence structure
إِنَّ opens the result clause. رَبَّهُم is its accusative noun; بِهِمْ and يَوْمَئِذٍ link to emphatic nominative predicate لَّخَبِيرٌ.
Ayah summary
Surely on that day their Lord will be fully aware of all their outward and inward deeds.
إِنَّ — Indeed
Grammar: An accusative particle of emphasis introducing the result clause.
رَبَّهُم — their Lord
Grammar: The masculine accusative noun of إِنَّ; هُم is possessive.
بِهِمْ — about them
Grammar: A preposition with a masculine-plural genitive pronoun, linked to the predicate خَبِيرٌ.
يَوْمَئِذٍۢ — that Day
Grammar: An accusative time adverb linked to the predicate خَبِيرٌ.
لَّخَبِيرٌۢ — surely fully aware
Grammar: Emphatic لَ prefixes an indefinite masculine nominative predicate of إِنَّ.