وَلَوْ شَاءَ اللَّهُ لَجَعَلَكُمْ أُمَّةً وَاحِدَةً وَلَٰكِنْ يُضِلُّ مَنْ يَشَاءُ وَيَهْدِي مَنْ يَشَاءُ ۚ وَلَتُسْأَلُنَّ عَمَّا كُنْتُمْ تَعْمَلُونَ 93
If Allah so willed, He could make you all one people: But He leaves straying whom He pleases, and He guides whom He pleases: but ye shall certainly be called to account for all your actions.