وَإِن تُكَذِّبُوا۟ فَقَدْ كَذَّبَ أُمَمٌ مِّن قَبْلِكُمْ ۖ وَمَا عَلَى ٱلرَّسُولِ إِلَّا ٱلْبَلَٰغُ ٱلْمُبِينُ

And if you reject (the truth), nations before you did indeed reject (the truth); and nothing is incumbent on the apostle but a plain delivering (of the message).