Patience and perseverance in da'wah

وَإِن مَّا نُرِيَنَّكَ بَعْضَ ٱلَّذِى نَعِدُهُمْ أَوْ نَتَوَفَّيَنَّكَ فَإِنَّمَا عَلَيْكَ ٱلْبَلَـٰغُ وَعَلَيْنَا ٱلْحِسَابُ

And whether We show you part of what We promise them or take you in death, upon you is only the [duty of] notification, and upon Us is the account.

وَقِيلِهِۦ يَـٰرَبِّ إِنَّ هَـٰٓؤُلَآءِ قَوْمٌ لَّا يُؤْمِنُونَ

And [Allāh acknowledges] his saying, "O my Lord, indeed these are a people who do not believe."

قَالَ رَبِّ إِنِّى دَعَوْتُ قَوْمِى لَيْلًا وَنَهَارًا

He said, "My Lord, indeed I invited my people [to truth] night and day.