سورة Hud 11:118

وَلَوْ شَآءَ رَبُّكَ لَجَعَلَ ٱلنَّاسَ أُمَّةًۭ وَٰحِدَةًۭ ۖ وَلَا يَزَالُونَ مُخْتَلِفِينَ ١١٨

Had your Lord so willed, He would have certainly made humanity one single community ˹of believers˺, but they will always ˹choose to˺ differ—