Nearby ayahs help place verse 7:53 in sequence and meaning.
ٱلَّذِينَ ٱتَّخَذُوا۟ دِينَهُمْ لَهْوًا وَلَعِبًا وَغَرَّتْهُمُ ٱلْحَيَوٰةُ ٱلدُّنْيَا ۚ فَٱلْيَوْمَ نَنسَىٰهُمْ كَمَا نَسُوا۟ لِقَآءَ يَوْمِهِمْ هَـٰذَا وَمَا كَانُوا۟ بِـَٔايَـٰتِنَا يَجْحَدُونَ
Who took their religion as distraction and amusement and whom the worldly life deluded." So today We will forget them just as they forgot the meeting of this Day of theirs and for having rejected Our verses.
وَلَقَدْ جِئْنَـٰهُم بِكِتَـٰبٍ فَصَّلْنَـٰهُ عَلَىٰ عِلْمٍ هُدًى وَرَحْمَةً لِّقَوْمٍ يُؤْمِنُونَ
And We had certainly brought them a Book which We detailed by knowledge - as guidance and mercy to a people who believe.
إِنَّ رَبَّكُمُ ٱللَّهُ ٱلَّذِى خَلَقَ ٱلسَّمَـٰوَٰتِ وَٱلْأَرْضَ فِى سِتَّةِ أَيَّامٍ ثُمَّ ٱسْتَوَىٰ عَلَى ٱلْعَرْشِ يُغْشِى ٱلَّيْلَ ٱلنَّهَارَ يَطْلُبُهُۥ حَثِيثًا وَٱلشَّمْسَ وَٱلْقَمَرَ وَٱلنُّجُومَ مُسَخَّرَٰتٍۭ بِأَمْرِهِۦٓ ۗ أَلَا لَهُ ٱلْخَلْقُ وَٱلْأَمْرُ ۗ تَبَارَكَ ٱللَّهُ رَبُّ ٱلْعَـٰلَمِينَ
Indeed, your Lord is Allah, who created the heavens and earth in six days and then established Himself above the Throne. He covers the night with the day, [another night] chasing it rapidly; and [He created] the sun, the moon, and the stars, subjected by His command. Unquestionably, His is the creation and the command; blessed is Allah, Lord of the worlds.
ٱدْعُوا۟ رَبَّكُمْ تَضَرُّعًا وَخُفْيَةً ۚ إِنَّهُۥ لَا يُحِبُّ ٱلْمُعْتَدِينَ
Call upon your Lord in humility and privately; indeed, He does not like transgressors.