Back 
Surah 40. Ghafir
Ayah 82 - 85
82 أَفَلَمْ يَسِيرُوا۟ فِى ٱلْأَرْضِ فَيَنظُرُوا۟ كَيْفَ كَانَ عَـٰقِبَةُ ٱلَّذِينَ مِن قَبْلِهِمْ ۚ كَانُوٓا۟ أَكْثَرَ مِنْهُمْ وَأَشَدَّ قُوَّةً وَءَاثَارًا فِى ٱلْأَرْضِ فَمَآ أَغْنَىٰ عَنْهُم مَّا كَانُوا۟ يَكْسِبُونَ
83 فَلَمَّا جَآءَتْهُمْ رُسُلُهُم بِٱلْبَيِّنَـٰتِ فَرِحُوا۟ بِمَا عِندَهُم مِّنَ ٱلْعِلْمِ وَحَاقَ بِهِم مَّا كَانُوا۟ بِهِۦ يَسْتَهْزِءُونَ
84 فَلَمَّا رَأَوْا۟ بَأْسَنَا قَالُوٓا۟ ءَامَنَّا بِٱللَّهِ وَحْدَهُۥ وَكَفَرْنَا بِمَا كُنَّا بِهِۦ مُشْرِكِينَ
85 فَلَمْ يَكُ يَنفَعُهُمْ إِيمَـٰنُهُمْ لَمَّا رَأَوْا۟ بَأْسَنَا ۖ سُنَّتَ ٱللَّهِ ٱلَّتِى قَدْ خَلَتْ فِى عِبَادِهِۦ ۖ وَخَسِرَ هُنَالِكَ ٱلْكَـٰفِرُونَ
82. Have they not traveled through the earth and seen what was the end of those before them They were more in number than them and mightier in strength, and in the traces in the land; yet all that they used to earn availed them not. 83. Then when their Messengers came to them with clear proofs, they were glad (and proud) with that which they had of the knowledge (of worldly things). And that at which they used to mock, surrounded them. 84. So when they saw Our punishment, they said: "We believe in Allah Alone and reject (all) that we used to associate with Him as (His) partners.'' 85. Then their Faith could not avail them when they saw Our punishment. (Like) this has been the way of Allah in dealing with His servants. And there the disbelievers lost utterly.
Allah tells us about the nations who rejected their Messengers in ancient times. He mentioned the severe punishment they suffered despite their great strength, He mentioned the traces which they left behind in the earth and the great wealth they amassed. None of that availed them anything and could not prevent the punishment of Allah at all. That is because when the Messengers came to them with clear signs and decisive evidence, they did not pay any attention to them. Instead, they were content with the knowledge with them, or so they claimed, and they said that they did not need what the Messengers brought them. Mujahid said, "They said, we know better than them, we will not be resurrected and we will not be punished.'' As-Suddi said, "In their ignorance, they rejoiced in what they had of (worldly) knowledge. So Allah sent upon them a punishment which they could not escape or resist.''
(and surrounded them.) means, encompassed them.
(that at which they used to mock,) means, that which they used to disbelieve in and said would never happen,
(So when they saw Our punishment,) means, when they saw with their own eyes the punishment which came upon them, they said,
(We believe in Allah Alone and reject (all) that we used to associate with Him as (His) partners. ) means, they affirmed that Allah is One and denied the false gods, but this was at the time when excuses were to no avail. This is like what Fir`awn said as he was drowning:
(I believe that none has the right to be worshipped but He in Whom the Children of Israel believe, and I am one of the Muslims.) (10:90) But Allah said:
(Now (you believe) while you refused to believe before and you were one of the the corrupters.) (10:91) meaning, Allah did not accept this from him, because He had answered the prayer of His Prophet Musa, when he said,
(And harden their hearts, so that they will not believe until they see the painful torment) (10:88). Allah says here:
(Then their Faith could not avail them when they saw Our punishment. (Like) this has been the way of Allah in dealing with His servants.) means, this is the ruling of Allah concerning all those who repent only when they actually see the punishment: He does not accept that from them. It says in the Hadith:
(Allah will accept the repentance of His servant so long as the death rattle is not sounding in his throat.) Once the death rattle is sounding and the soul has reached the throat, and the dying person actually sees the angel (of death), then he can no longer repent. Allah says:
(And there the disbelievers lost utterly.) This is the end of the Tafsir of Surah Ghafir. Praise and thanks be to Allah.