(Muhammad), We have revealed the Quran to you in gradual steps. 23 So persevere with the command of your Lord and do not pay any heed to the wicked and the unbelieving, 24 Meditate upon the name of your Lord morning and evening; 25 And during the night - worship Him; and hallow Him 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 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 Surely this is a reminder, so whoever pleases takes to his Lord a way. 29 Yet ye will not, unless Allah willeth. Lo! Allah is Knower, Wise. 30 He admits to His Mercy whomsoever He pleases. As for the wrong-doers, He has prepared for them a grievous chastisement. 31