Translation:
1. Alif Lam Ra. A Book which We have revealed unto thee in order that thou mightest lead mankind out of the depths of darkness into light by the leave of their Lord to the Way of (Him) Exalted in Power Worthy of all Praise!
Notes (Tafseer)
1870. It is insisted on that every Prophet speaks not from himself but from Allah. His leading into the light is but by the grace and mercy of Allah, not by any power of his own, or by any merit of those who hear him.
1871. In this and the next verse where the sentence is completed, three qualities of Allah are mentioned, viz., (1) His exalted position above all Creation; (2) His goodness, which entitles Him, and Him alone, to Praise- and (3) His Power in all heaven and earth. Thus He stands in no need of man's worship; His goodness is all for the good of man (and His creatures); and His control over His creatures is complete; so He can carry out His Will and Plan.