Surah 18. Al-Kahf

53This verse has two meanings:

(1) We send Our Messengers to forewarn the people before the coming of the judgment of the good results of obedience and the evil consequences of disobedience. But these foolish people are not taking advantage of these forewarnings and insist on seeing the same evil end from which the Messengers desire to save them.

(2) It' they insist on meeting with the scourge, they should not demand this from the Messenger because the Messenger is sent not to bring a scourge but to warn the people beforehand to escape from it.