Verily We! it is We Who have revealed unto thee the Qur'an, a gradual revelation. 23 So persevere with the command of your Lord and do not pay any heed to the wicked and the unbelieving, 24 Mention the Name of your Lord, mornings and evenings. 25 and during the night prostrate ourself before Him, and extol His glory for a long part of the 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 is We Who creared them and made them firm of make. And whenever We list, We can replace them with others like unto 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 admits whom He wills into His mercy; but the wrongdoers - He has prepared for them a painful punishment. 31