Truly, it is We who have revealed to you the Quran, a gradual revelation. 23 Therefore be patient with constancy to the Command of thy Lord, and hearken not to the sinner or the ingrate among them. 24 And, remember the Name of your Lord at the dawn and in the 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 It is We Who created them, and strengthened their skeleton; and We can replace them with others like them, whenever We will. 28 Indeed, this is a reminder, so he who wills may take to his Lord a way. 29 Yet ye will not, unless Allah willeth. Lo! Allah is Knower, Wise. 30 He admits into His mercy, whomever He wills; and for the unjust He has kept prepared a painful punishment. 31