The Prophets
وَلَقَدْ كَتَبْنَا فِى ٱلزَّبُورِ مِنۢ بَعْدِ ٱلذِّكْرِ أَنَّ ٱلْأَرْضَ يَرِثُهَا عِبَادِىَ ٱلصَّـٰلِحُونَ
And We have already written in the book [of Psalms] after the [previous] mention that the land [of Paradise] is inherited by My righteous servants.
Nearby ayahs help place verse 21:105 in sequence and meaning.
لَا يَحْزُنُهُمُ ٱلْفَزَعُ ٱلْأَكْبَرُ وَتَتَلَقَّىٰهُمُ ٱلْمَلَـٰٓئِكَةُ هَـٰذَا يَوْمُكُمُ ٱلَّذِى كُنتُمْ تُوعَدُونَ
They will not be grieved by the greatest terror, and the angels will meet them, [saying], "This is your Day which you have been promised" -
يَوْمَ نَطْوِى ٱلسَّمَآءَ كَطَىِّ ٱلسِّجِلِّ لِلْكُتُبِ ۚ كَمَا بَدَأْنَآ أَوَّلَ خَلْقٍ نُّعِيدُهُۥ ۚ وَعْدًا عَلَيْنَآ ۚ إِنَّا كُنَّا فَـٰعِلِينَ
The Day when We will fold the heaven like the folding of a [written] sheet for the records. As We began the first creation, We will repeat it. [That is] a promise binding upon Us. Indeed, We will do it.
إِنَّ فِى هَـٰذَا لَبَلَـٰغًا لِّقَوْمٍ عَـٰبِدِينَ
Indeed, in this [Qur'an] is notification for a worshipping people.
وَمَآ أَرْسَلْنَـٰكَ إِلَّا رَحْمَةً لِّلْعَـٰلَمِينَ
And We have not sent you, [O Muhammad], except as a mercy to the worlds.