It is We Who have sent down the Qur'an to thee by stages. 23 So wait for your Lord's command, and do not follow any sinner or disbeliever among them. 24 and glorify your Lord morning and evening; 25 and prostrate yourself before Him at night, and extol His Glory during the long watches of the 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 admonition; then whosoever will, may choose a way unto his Lord. 29 But you will not unless God wills; surely God is ever All-knowing, All-wise. 30 He is Merciful to whom He will; but, for the harmdoers He has prepared for them a painful punishment. 31