﴿ قُلْ فَلِلَّهِ ٱلْحُجَّةُ ٱلْبَٰلِغَةُ ۖ فَلَوْ شَآءَ لَهَدَىٰكُمْ أَجْمَعِينَ ﴾

“Say: "[Know,] then, that the final evidence [of all truth] rests with God alone; and had He so willed, He would have guided you all aright.”

Please check ayah 6:150 for complete tafsir.