30 That is, "If you reject my invitation to Tauhid and deny my message that you have to return to your Lord and render an account of your deeds, it will not be a new thing. In the history of mankind many Prophets-like Noah, Hud, Salih (on whom be Allah's peace) before also have brought the same teachings, and their peoples denied them likewise. Now you may judge for yourselves as to whether they harmed the Prophets or only themselves" .