﴿قُلْ فَلِلَّهِ الْحُجَّةُ الْبَالِغَةُ ۖ فَلَوْ شَاءَ لَهَدَاكُمْ أَجْمَعِينَ﴾
149. Say: "With Allâh is the perfect proof and argument, (i.e. the Oneness of Allâh, the sending of His Messengers and His Holy Books to mankind); had He so willed, He would indeed have guided you all."