Surah Yunus Verse 19 - English Translation by Dr Munir Munshey
Surah Yunusوَمَا كَانَ ٱلنَّاسُ إِلَّآ أُمَّةٗ وَٰحِدَةٗ فَٱخۡتَلَفُواْۚ وَلَوۡلَا كَلِمَةٞ سَبَقَتۡ مِن رَّبِّكَ لَقُضِيَ بَيۡنَهُمۡ فِيمَا فِيهِ يَخۡتَلِفُونَ
To begin with, people had only one religion. Later on, they differed. Their disputes would have been settled, but the word has already gone out from your Lord (that this world is a test, the next is for punishment and reward)