The Quran's Authenticity

أَوَلَمْ يَكُن لَّهُمْ ءَايَةً أَن يَعْلَمَهُۥ عُلَمَـٰٓؤُا۟ بَنِىٓ إِسْرَٰٓءِيلَ

And has it not been a sign to them that it is recognized by the scholars of the Children of Israel?

إِذَا تُتْلَىٰ عَلَيْهِ ءَايَـٰتُنَا قَالَ أَسَـٰطِيرُ ٱلْأَوَّلِينَ

When Our verses are recited to him, he says, "Legends of the former peoples."