Truly, it is We who have revealed to you the Quran, a gradual revelation. 23 Wherefore persevere thou with the commandment of thy Lord, and obey not thou of them, any sinner or ingrate. 24 and remember the name of 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 love the transitory and neglect a grievous day before them. 27 It is We Who created them, and strengthened their skeleton; and We can replace them with others like them, whenever We will. 28 This surely is a reminder: Therefore whosoever desires may take the way to his Lord. 29 But ye will not, except as Allah wills; for Allah is full of Knowledge and Wisdom. 30 He admits to His mercy whomever He wants. For the unjust He has prepared a painful punishment. 31