وَإِن تُكَذِّبُوا۟ فَقَدْ كَذَّبَ أُمَمٌ مِّن قَبْلِكُمْ ۖ وَمَا عَلَى ٱلرَّسُولِ إِلَّا ٱلْبَلَـٰغُ ٱلْمُبِينُ
And if you [people] deny [the message] - already nations before you have denied. And there is not upon the Messenger except [the duty of] clear notification.1
Dimensional Analysis
Context
"For ye do worship idols besides Allah, and ye invent falsehood. The things that ye worship besides Allah have no power to give you sustenance: then seek ye sustenance from Allah, serve Him, and be grateful to Him: to Him will be your return.
"And if ye reject (the Message), so did generations before you: and the duty of the messenger is only to preach publicly (and clearly)."
See they not how Allah originates creation, then repeats it: truly that is easy for Allah.
Related Verses
واللهُ أعلمُ بالصَّواب