وَما كانَ النّاسُ إِلّا أُمَّةً واحِدَةً فَاختَلَفوا ۚ وَلَولا كَلِمَةٌ سَبَقَت مِن رَبِّكَ لَقُضِيَ بَينَهُم فيما فيهِ يَختَلِفونَ

Humanity was once a single community, before differences emerged. If not for a prior decree from your Lord, their disputes would’ve been settled.