21:39

لَوْ يَعْلَمُ الَّذِينَ كَفَرُوا حِينَ لَا يَكُفُّونَ عَن وُجُوهِهِمُ النَّارَ وَلَا عَن ظُهُورِهِمْ وَلَا هُمْ يُنصَرُونَ

Transliteration:

Law yaAAlamu allatheena kafaroo heena la yakuffoona AAan wujoohihimu alnnara wala AAan thuhoorihim wala hum yunsaroona

Word by Word:

If knew those who disbelieved (the) time (when) not they will avert from their faces the Fire and not from their backs and not they will be helped!

Translations:

If they but knew - they who are bent on denying the truth - [that there will come] a time when they will not be able to ward off the fire from their faces, nor from their backs, and will not find any succour!

If only the Unbelievers knew (the time) when they will not be able to ward off the fire from their faces, nor yet from their backs, and (when) no help can reach them!

If those who disbelieved but knew the time when they will not be able to drive off the fire from their faces and from their backs, and they will not be helped!

If those who disbelieve but knew the time when they will not be able to ward off the fire from their faces, nor from their backs, and they will not be helped!

If those who disbelieved but knew the time when they will not avert the Fire from their faces or from their backs and they will not be aided...