So is one whose breast Allah has expanded to [accept] Islām and a light from his Lord is upon him [like one whose heart is hardened]? Then woe to those whose hearts are hardened against the remembrance of Allah. Those are clearly astray.
Allah has sent down the best statement: a consistent Book and oft-repeated [lessons]. The skins of those who fear their Lord shiver thereat; then their skins and their hearts relax at the remembrance of Allah. That is the guidance of Allah by which He guides whom He wills. And one whom Allah sends astray – for him there is no guide.