The Cave
In the name of God, Most Gracious, Most Merciful.[18:57]
And who doth more wrong than one who is reminded of the Signs of his Lord, but turns away from them, forgetting the (deeds) which his hands have sent forth? Verily We have set veils over their hearts lest they should understand this, and over their ears, deafness, if thou callest them to guidance, even then will they never accept guidance.

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* v.57 : Considering the power of sin, and how it gets hold of the hearts of men, and considering all the wrongs that men have done, it is the height of folly and injustice on their part to turn away from warnings which are given expressly for their good. But a stage of callousness is reached, when, by their own choice, they have rendered themselves impervious to Allah’s Grace. At that stage a veil is put over their hearts and they are left alone for a time, that they may commune with themselves and perhaps repent and seek Allah’s Mercy again. If they do not, it is their own loss. See next verse.