Surely We have sent down the Koran on thee, a sending down; 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 prostrate for Him in a part of the night, and proclaim His purity into the long night. 26 As to these, they love the fleeting life, and put away behind them a Day (that will be) hard. 27 It was We who created them and made their constitution strong, but if We wish we can replace them with others like them. 28 Verily this is an Exhortation; so let him who so will take a way to his Lord. 29 Yet you will not unless Allah wills; surely, Allah is the Knower, the 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