Truly, it is We who have revealed to you the Quran, a gradual revelation. 23 So wait patiently for the command of your Lord and do not yield to any sinful or disbelieving person among them (people). 24 And remember thou the name of thy Lord in the morning and in the evening. 25 And during the night - worship Him; and hallow Him the livelong night. 26 As to these, they love the fleeting life, and put away behind them a Day (that will be) hard. 27 We have created them and strengthened their forms, and when We will, We can change their likenesses with [complete] alteration. 28 This is indeed a Reminder, so that he who will, takes a path to his Lord. 29 Yet ye will not, unless Allah willeth. Lo! Allah is Knower, Wise. 30 He admits to His Mercy whomsoever He pleases. As for the wrong-doers, He has prepared for them a grievous chastisement. 31