Importance of sin and forgiveness in the Plan of Allah

The Messenger of Allah ﷺ said, "By Him in Whose Hand is my life, if you were not to commit sins, Allah would do away with you and ˹replace you by˺ bringing a nation who would commit sins and seek forgiveness from Allah, and He would then forgive them."  

قَالَ رَسُولُ اللَّهِ ﷺ: «وَالَّذِي نَفْسِي بِيَدِهِ لَوْ لَمْ تُذْنِبُوا لَذَهَبَ اللَّهُ بِكُمْ وَلَجَاءَ بِقَوْمٍ يُذْنِبُونَ فَيَسْتَغْفِرُونَ اللَّهَ فَيَغْفِرُ لَهُمْ۔»  

By Him in Whose Hand is my life, if you were not to commit sin, Allah would sweep you out of existence and He would replace (you by) those people who would commit sin and seek forgiveness from Allah, and He would have pardoned them. (Using translation from Muslim 2749)  

قَالَ رَسُولُ اللهِ ﷺ وَالَّذِي نَفْسِي بِيَدِهِ لَوْ لَمْ تُذْنِبُوا لَذَهَبَ اللهُ بِكُمْ وَلَجَاءَ بِقَوْمٍ يُذْنِبُونَ فَيَسْتَغْفِرُونَ اللهَ فَيَغْفِرُ لَهُمْ  

[Machine] The Messenger of Allah ﷺ said, "If you did not commit sins, Allah would replace you with people who would commit sins and seek His forgiveness."  

قَالَ رَسُولُ اللهِ ﷺ «لَوْ لَمْ تُذْنِبُوا لَجَاءَ اللهُ بِقَوْمٍ يُذْنِبُونَ فَيَغْفِرُ لَهُمْ»  

"وَالَّذِي نَفْسِي بِيَدهِ، لَو أَنَّكُم لا تُذْنِبُون فَتسْتَغْفِرُون الله فَيَغْفر لكم، لَذَهبَ بكم، ثم جَاء بِقَوْمٍ يُذْنِبون فَيَسْتَغْفِرون فَيَغْفَرُ لَهم، وَلَوْ أَنَّكُم تُخْطِئُون حتى تَبلغَ خَطَايَاكُم السماءَ ثم تَتُوبُون لَتَابَ اللهُ عَلَيكُم".  

"لَوْلا أنَّكُمْ تُذْنِبُون لَجَاءَ الله بِقَوْمٍ يُذْنِبُونَ فَيَسْتَغْفِرُونَ الله فَيَغْفرُ لهم".