Az-Zumar (The Troops)
Surah 39 · Verse 23
Allah has sent down the best statements (in the form of) a book, (these statements are) similar (to each other and not contradictory and are) repeated. The skins of those who fear their Fosterer tremble (in response to the effect produced) by it, then their skins and their hearts soften towards the remembrance of Allah. That is guidance of Allah, He guides through it whom He wills, and whom Allah leaves to stray then there is no guide for him.
The influence of the Quran on pious people is described, these are not equal to sinners who will be punished.
