Truly, it is We who have revealed to you the Quran, a gradual revelation. 23 So submit patiently to thy Lord's command, and obey not of them any guilty one or disbeliever. 24 and glorify your Lord morning and evening; 25 And during the night prostrate to Him and exalt Him a long [part of the] night. 26 Surely these men love the hasty world, and leave be behind them a heavy day. 27 We, even We, created them, and strengthened their frame. And when We will, We can replace them, bringing others like them in their stead. 28 This surely is a reminder: Therefore whosoever desires may take the way to his Lord. 29 But your willing shall be of no avail until Allah Himself so wills. Surely Allah is All-Knowing, Most Wise. 30 He makes whom He pleases to enter into His mercy; and (as for) the unjust, He has prepared for them a painful chastisement. 31