Surah Al-An'aam Verse 109

وَأَقْسَمُوا بِاللَّهِ جَهْدَ أَيْمَانِهِمْ لَئِن جَاءَتْهُمْ آيَةٌ لَّيُؤْمِنُنَّ بِهَا ۚ قُلْ إِنَّمَا الْآيَاتُ عِندَ اللَّهِ ۖ وَمَا يُشْعِرُكُمْ أَنَّهَا إِذَا جَاءَتْ لَا يُؤْمِنُونَ

Wa aqsamoo billaahi jahda aimaanihim la'in jaaa'at hum Aayatul la yu'minunna bihaa; qul innamal Aayaatu 'indal laahi wa maa yush'irukum annahaaa izaa jaaa'at laa yu'minoon

Translation / The Meaning

And they swear by Allah their strongest oaths that if a sign came to them, they would surely believe in it. Say, "The signs are only with Allah." And what will make you perceive that even if a sign came, they would not believe.