Verily We! it is We Who have revealed unto thee the Qur'an, a gradual revelation. 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 worship Him (a portion) of the night. And glorify Him through the livelong night. 26 Verily! These (disbelievers) love the present life of this world, and put behind them a heavy 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 Surely this is a reminder, so whoever pleases takes to his Lord a way. 29 But you cannot will it unless God wills [to show you that way] -- God is indeed all-knowing and wise -- 30 He is Merciful to whom He will; but, for the harmdoers He has prepared for them a painful punishment. 31