Yunus Ayah 99
وَلَوْ شَآءَ رَبُّكَ لَأَمَنَ مَن فِى ٱلْأَرْضِ كُلُّهُمْ جَمِيعًاۚ أَفَأَنتَ تُكْرِهُ ٱلنَّاسَ حَتَّىٰ يَكُونُواْ مُؤْمِنِينَ ٩٩
Had your Lord so willed ?O Prophet?, all ?people? on earth would have certainly believed, every single one of them! Would you then force people to become believers?