﴿ أَلَا لِلَّهِ ٱلدِّينُ ٱلْخَالِصُ ۚ وَٱلَّذِينَ ٱتَّخَذُوا۟ مِن دُونِهِۦٓ أَوْلِيَآءَ مَا نَعْبُدُهُمْ إِلَّا لِيُقَرِّبُونَآ إِلَى ٱللَّهِ زُلْفَىٰٓ إِنَّ ٱللَّهَ يَحْكُمُ بَيْنَهُمْ فِى مَا هُمْ فِيهِ يَخْتَلِفُونَ ۗ إِنَّ ٱللَّهَ لَا يَهْدِى مَنْ هُوَ كَٰذِبٌۭ كَفَّارٌۭ ﴾

“Is it not to God alone that all sincere faith is due? And yet, they who take for their protectors aught beside Him [are wont to say], “We worship them for no other reason than that they bring us nearer to God.” Behold, God will judge between them [on Resur­rection Day] with regard to all wherein they differ [from the truth]: for, verily, God does not grace with His guidance anyone who is bent on lying [to himself and is] stubbornly ingrate!”

Please check ayah 39:4 for complete tafsir.