Verily We! it is We Who have revealed unto thee the Qur'an, a gradual revelation. 23 So wait patiently for the command of your Lord and do not yield to any sinful or disbelieving person among them (people). 24 And mention the name of your Lord [in prayer] morning and evening 25 and prostrate yourself before Him at night, and extol His Glory during the long watches of the night. 26 Verily those love the herein, and leave in front of them a heavy day. 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 Indeed, this is a reminder, so he who wills may take to his Lord a way. 29 And you do not please except that Allah please, surely Allah is Knowing, Wise; 30 He will admit to His Mercy whom He will; But the wrong-doers,- for them has He prepared a grievous Penalty. 31