It is We Who have sent down the Qur'an to thee by stages. 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 - worship Him; and hallow Him the livelong night. 26 Surely these love the transitory and neglect a grievous day before them. 27 We created them and made firm their make, and when We please We will bring in their place the likes of them by a change. 28 This is indeed an advice; so whoever wishes may take the path towards his Lord. 29 And you do not please except that Allah please, surely Allah is 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