They ask you about the Hour, when will be its appointed time? Say, "Only its knowledge (is) with my Lord, no (one) can reveal [it] its time except Him. It lays heavily in the heavens and the earth. Not will it come to you but suddenly." They ask you as if you (were) well informed about it. Say, "Only its knowledge (is) with Allah, but most (of) the people (do) not know."