(Muhammad), We have revealed the Quran to you in gradual steps. 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 thou the name of thy Lord in the morning and in the evening. 25 And prostrate for Him in a part of the night, and proclaim His purity into the long night. 26 Surely these love the transitory and neglect a grievous day before them. 27 [They will not admit to themselves that] it We who have created them and strengthened their make - and [that] if it be Our will We can replace them entirely with others of their kind. 28 Verily this is an admonition; then whosoever will, may choose a way unto his Lord. 29 And what will you wish, except if Allah wills; indeed Allah is All Knowing, Wise. 30 He admits to His Mercy whomsoever He pleases. As for the wrong-doers, He has prepared for them a grievous chastisement. 31