(Muhammad), We have revealed the Quran to you in gradual steps. 23 Wherefore persevere thou with the commandment of thy Lord, and obey not thou of them, any sinner or ingrate. 24 Mention the Name of your Lord, mornings and evenings. 25 and during some of the night, and prostrate thyself before Him, and extol His limitless glory throughout the long night. 26 As to these, they love the fleeting life, and put away behind them a Day (that will be) hard. 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 This is indeed an advice; so whoever wishes may take the path towards his Lord. 29 But ye will not, except as Allah wills; for Allah is full of Knowledge and Wisdom. 30 For He admits into His mercy whomsoever He will; as for the evildoers, He has prepared for them a painful chastisement. 31