Verse 6

يَوْمَ يَبْعَثُهُمُ ٱللَّهُ جَمِيعًا فَيُنَبِّئُهُم بِمَا عَمِلُوٓا۟ أَحْصَىٰهُ ٱللَّهُ وَنَسُوهُ وَٱللَّهُ عَلَىٰ كُلِّ شَىْءٍ شَهِيدٌ

The day when God will resurrect them all, He will then inform them regarding everything they have done. God has recorded it mathematically while they have forgotten it.  And God witnesses all things.