Surely We Ourselves have revealed the Quran to you revealing (it) in portions. 23 So wait patiently for the command of your Lord, and do not yield to anyone among them who is sinful or ungrateful; 24 and remember the name of your Lord, morning and evening; 25 And during part of the night adore Him, and give glory to Him (a) long (part of the) night. 26 Verily those love the herein, and leave in front of 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 is indeed an advice; so whoever wishes may take the path towards his Lord. 29 But you cannot will it unless God wills [to show you that way] -- God is indeed all-knowing and 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