وَلَوۡ شَآءَ رَبُّكَ لَجَعَلَ ٱلنَّاسَ أُمَّةٗ وَٰحِدَةٗۖ وَلَا يَزَالُونَ مُخۡتَلِفِينَ
Had thy Lord pleased he would have made mankind of one religion: but those only to whom thy Lord hath granted his mercy will cease to differ
Author: John Medows Rodwell