The Saheeh International Quran Translation
وَلَوْ شَآءَ رَبُّكَ لَجَعَلَ ٱلنَّاسَ أُمَّةً وَٰحِدَةً وَلَا يَزَالُونَ مُخْتَلِفِينَ
تجهيز للطباعة
And if your Lord had willed, He could have made mankind one community; but they will not cease to differ.