Ar-Rum 30:59

<h2>Parables in the Qur'an and how the Disbelievers do not learn from them</h2><p>وَلَقَدْ ضَرَبْنَا لِلنَّاسِ فِى هَـذَا الْقُرْءَانِ مِن كُلِّ مَثَلٍ</p><p>(And indeed We have set forth for mankind, in this Qur'an every kind of parable.) means, `We have explained the truth to them and have made it clear to them, and have set forth for them parables so that they may understand the truth and follow it.'</p><p>وَلَئِن جِئْتَهُمْ بِـَايَةٍ لَّيَقُولَنَّ الَّذِينَ كَفَرُواْ إِنْ أَنتُمْ إِلاَّ مُبْطِلُونَ</p><p>(But if you bring to them any sign or proof, the disbelievers are sure to say (to the believers): "You follow nothing but falsehood and magic.") If they were to see any kind of sign, whether it was at their own direction or otherwise, they would not believe in it and they would think that it was magic and falsehood, as they said when the moon was cleft asunder, etc., as Allah says:</p><p>إِنَّ الَّذِينَ حَقَّتْ عَلَيْهِمْ كَلِمَةُ رَبِّكَ لاَ يُؤْمِنُونَ - وَلَوْ جَآءَتْهُمْ كُلُّ ءايَةٍ حَتَّى يَرَوُاْ الْعَذَابَ الاٌّلِيمَ</p><p>(Truly, those, against whom the Word of your Lord has been justified, will not believe. Even if every sign should come to them, until they see the painful torment.) (10:96-97). Allah says here:</p><p>كَذَلِكَ يَطْبَعُ اللَّهُ عَلَى قُلُوبِ …

Thus doth Allah seal the hearts of those who know not.

Thus does Allah seal up the hearts of those who understand not.

Thus does Allah seal up the hearts of those who know not [the proofs and evidence of the Oneness of Allah i.e. those who try not to understand true facts that which you (Muhammad SAW) have brought to them].

God thus seals the hearts of those who do not know.