irrationality of disbelievers

وَإِذَا تُتْلَىٰ عَلَيْهِمْ ءَايَـٰتُنَا بَيِّنَـٰتٍ مَّا كَانَ حُجَّتَهُمْ إِلَّآ أَن قَالُوا۟ ٱئْتُوا۟ بِـَٔابَآئِنَآ إِن كُنتُمْ صَـٰدِقِينَ

And when Our verses are recited to them as clear evidences, their argument is only that they say, "Bring [back] our forefathers, if you should be truthful."