{ Those who have believed say: “Were that a surah would be sent down”; but when a surah that is firm was sent down, and fighting was mentioned in it, you saw those with sickness in their hearts look at you with the look of someone whose death is looming over them } Muhammad 20

Their words: { Were that a surah would be sent down } : the intended meaning is a surah with an assignment to put the Believers and the hypocrites to the test. Indeed the Most High then sent down a surah with fighting in it, since this is surely the most difficult assignment.