لَعَلَّكَ بَاخِعٌ نَّفْسَكَ اَلَّا یَكُوْنُوْا مُؤْمِنِیْنَ(۳)اِنْ نَّشَاْ نُنَزِّلْ عَلَیْهِمْ مِّنَ السَّمَآءِ اٰیَةً فَظَلَّتْ اَعْنَاقُهُمْ لَهَا خٰضِعِیْنَ(۴)
Translation
(O Prophet) perhaps you are going to destroy your life in this grief as to (why) these people do not believe. (3) If We wish, We could send down upon them such a sign from the sky that their necks would remain bowed down before it. (4)
Meaning: The meaning is that it was not difficult at all for Allah Almighty to force them to believe, but the purpose of sending man into this world is not to forcefully make him a Muslim. Rather, the demand from man is that he should choose the path of faith by using his intellect and reflecting upon the proofs without any coercion. This is the very trial for which he has been sent into the world. Therefore, if these people are not believing, you should not grieve so much as to exhaust yourself to death. (Asan Tarjumat-ul-Quran)