الْعَنْكَبُوْتِ · 18

وَإِن تُكَذِّبُواْ فَقَدۡ كَذَّبَ أُمَمࣱ مِّن قَبۡلِكُمۡۖ وَمَا عَلَى ٱلرَّسُولِ إِلَّا ٱلۡبَلَٰغُ ٱلۡمُبِينُ

And if ye reject (the Message), so did generations before you: and the duty of the messenger is only to preach publicly (and clearly)