42:8
وَلَوْ شَآءَ ٱللَّهُ لَجَعَلَهُمْ أُمَّةً وَٰحِدَةً وَلَـٰكِن يُدْخِلُ مَن يَشَآءُ فِى رَحْمَتِهِۦ ۚ وَٱلظَّـٰلِمُونَ مَا لَهُم مِّن وَلِىٍّ وَلَا نَصِيرٍ
walaw shāa l-lahu lajaʿalahum ummatan wāḥidatan walākin yud'khilu man yashāu fī raḥmatihi wal-ẓālimūna mā lahum min waliyyin walā naṣīrin
If God had so pleased, He could have made them a single community, but He admits to His mercy whoever He will; the evildoers will have no one to protect or help them.
And if Allâh had willed, He could have made them one nation, but He admits whom He wills to His Mercy. And the Zâlimûn (polytheists and wrong-doers) will have neither a Walî (protector or guardian) nor a helper.