سورة Al-Anam 6:149

قُلْ فَلِلَّهِ ٱلْحُجَّةُ ٱلْبَـٰلِغَةُ ۖ فَلَوْ شَآءَ لَهَدَىٰكُمْ أَجْمَعِينَ ١٤٩

Say, “Allah has the most conclusive argument. Had it been His Will, He would have easily imposed guidance upon all of you.”