Al-An'am 6:158

Hal yanthuroona illaan ta/tiyahumu almala-ikatu aw ya/tiya rabbuka aw ya/tiyabaAAdu ayati rabbika yawma ya/tee baAAduayati rabbika la yanfaAAu nafsan eemanuhalam takun amanat min qablu aw kasabat fee eemanihakhayran quli intathiroo inna muntathiroon

Do they [then] wait for anything except that the angels should come to them or your Lord should come or that there come some of the signs of your Lord? The Day that some of the signs of your Lord will come no soul will benefit from its faith as long as it had not believed before or had earned through its faith some good. Say, "Wait. Indeed, we [also] are waiting."

They are waiting for nothing less than that the angels should come to them, or your Lord or some signs of your Lord should come. The day some signs of your Lord will come, the believing of a person shall be of no use to him who had never believed before, or had not earned some good through his faith. Say, “Wait. Of course, we are waiting.”