﴿ قُلْ أَرَءَيْتُمْ إِن كَانَ مِنْ عِندِ ٱللَّهِ ثُمَّ كَفَرْتُم بِهِۦ مَنْ أَضَلُّ مِمَّنْ هُوَ فِى شِقَاقٍۭ بَعِيدٍۢ ﴾

“HAVE YOU given thought [to how you will fare] if this be truly [a revelation] from God, the while you deny its truth? Who could be more astray than one who places himself [so] deeply in the wrong?”

Please check ayah 41:54 for complete tafsir.