30:60
فَٱصْبِرْ إِنَّ وَعْدَ ٱللَّهِ حَقٌّ ۖ وَلَا يَسْتَخِفَّنَّكَ ٱلَّذِينَ لَا يُوقِنُونَ
fa-iṣ'bir inna waʿda l-lahi ḥaqqun walā yastakhiffannaka alladhīna lā yūqinūna
so be patient, for God’s promise is true: do not let those with no firm beliefs discourage you.
So be patient (O Muhammad صلى الله عليه وسلم). Verily, the Promise of Allâh is true; and let not those who have no certainty of faith, discourage you from conveying Allâh’s Message (which you are obliged to convey).