إِنَّا أَرْسَلْنَا إِلَيْكُمْ رَسُولًا شَاهِدًا عَلَيْكُمْ كَمَا أَرْسَلْنَا إِلَىٰ فِرْعَوْنَ رَسُولًا (15)
(73:15) Surely *15 We have sent to you a Messenger as a witness over you, *16 just as We had sent a Messenger to Pharaoh.
*15) The address now turns to the disbelievers of Makkah, who were denying the Holy Prophet (upon whom be peace) and persecuting him relentlessly.
*16) Sending the Holy Prophet to be a witness over the people also means that he should testify to the Truth by his word and deed before them in the world and also that in the Hereafter when Allah's Court is established, he will testify that he had presented the whole Truth before the people in the world. (For further explanation, see E.N. 144 of Al-Baqarah, E.N. 64 of An-Nisa', An-Nahl: 84, 89, E.N. 82 of Al-Azab, E.N. 14 of Al-Fath).