Qaf
وَلَقَدْ خَلَقْنَا ٱلْإِنسَـٰنَ وَنَعْلَمُ مَا تُوَسْوِسُ بِهِۦ نَفْسُهُۥ ۖ وَنَحْنُ أَقْرَبُ إِلَيْهِ مِنْ حَبْلِ ٱلْوَرِيدِ
And We have already created man and know what his soul whispers to him, and We are closer to him than [his] jugular vein
Nearby ayahs help place verse 50:16 in sequence and meaning.
وَأَصْحَـٰبُ ٱلْأَيْكَةِ وَقَوْمُ تُبَّعٍ ۚ كُلٌّ كَذَّبَ ٱلرُّسُلَ فَحَقَّ وَعِيدِ
And the companions of the thicket and the people of Tubba'. All denied the messengers, so My threat was justly fulfilled.
أَفَعَيِينَا بِٱلْخَلْقِ ٱلْأَوَّلِ ۚ بَلْ هُمْ فِى لَبْسٍ مِّنْ خَلْقٍ جَدِيدٍ
Did We fail in the first creation? But they are in confusion over a new creation.
إِذْ يَتَلَقَّى ٱلْمُتَلَقِّيَانِ عَنِ ٱلْيَمِينِ وَعَنِ ٱلشِّمَالِ قَعِيدٌ
When the two receivers receive, seated on the right and on the left.
مَّا يَلْفِظُ مِن قَوْلٍ إِلَّا لَدَيْهِ رَقِيبٌ عَتِيدٌ
Man does not utter any word except that with him is an observer prepared [to record].