But if they turn away, We have not sent you ˹O Prophet˺ as a keeper over them. Your duty is only to deliver ˹the message˺. And indeed, when We let someone taste a mercy from Us, they become prideful ˹because˺ of it. But when afflicted with evil because of what their hands have done, then one becomes totally ungrateful.Quran 42:48Surah    ash-Shura (The Counsel)
The Surah takes its name from the Ayat,
وَالَّذِينَ اسْتَجَابُوا لِرَبِّهِمْ وَأَقَامُوا الصَّلَاةَ وَأَمْرُهُمْ شُورَىٰ بَيْنَهُمْ وَمِمَّا رَزَقْنَاهُمْ يُنفِقُونَ
“And those who have responded to their lord and established prayer and whose affair is [determined by] consultation among themselves, and from what We have provided them, they spend.” (42:38).
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فَإِنۡ أَعۡرَضُوا۟ 
فَمَاۤ أَرۡسَلۡنَـٰكَ عَلَیۡهِمۡ حَفِیظًاۖ

إِنۡ عَلَیۡكَ إِلَّا ٱلۡبَلَـٰغُۗ 

وَإِنَّاۤ إِذَاۤ أَذَقۡنَا ٱلۡإِنسَـٰنَ 
مِنَّا رَحۡمَةࣰ فَرِحَ بِهَاۖ
وَإِن تُصِبۡهُمۡ سَیِّئَةُۢ 
بِمَا قَدَّمَتۡ أَیۡدِیهِمۡ فَإِنَّ ٱلۡإِنسَـٰنَ كَفُورࣱ
The Surah emphasizes that the message of the Qur’an is from Allah Who revealed similar messages to other Prophets and Messengers. The religion of Allah has been the same throughout history.
If Allah wanted He would have made all people into one Ummah, but He has given freedom to people to make their own choice by their free will.
Allah will judge all people on the Day of Judgment. In the Surah it is also mentioned that the followers of this message are those who avoid major sins and who manage their affairs with mutual consultation.
پھر اگر یہ منہ پھیر لیں تو 
ہم نے تم کو ان پر نگہبان بنا کر نہیں بھیجا۔ 
تمہارا کام تو صرف (احکام کا) پہنچا دینا ہے۔ 

اور جب ہم انسان کو اپنی رحمت کا مزہ چکھاتے ہیں 
تو اس سے خوش ہوجاتا ہے۔ 

اور اگر ان کو ان ہی کے اعمال کے سبب کوئی سختی پہنچتی ہے تو (سب احسانوں کو بھول جاتے ہیں)

بےشک انسان بڑا ناشکرا ہے
Allah revealed His message to His Prophets. The purpose of revelation is to warn people about the Day of Judgment. Had Allah willed, He would have forced all people into one Ummah, but the wrong-does will see the consequences of their deeds.
The judgment is in the hand of Allah. He gave the same religion to all His Prophets. Muslims must invite people to Allah.
Allah deals justly with all people. Allah accepts the repentance. Allah’s mercy is manifest in the universe.
Believers should avoid sins, be patient, work with each other in consultation and practice forgiveness.
The Prophet guides to the right path, the path of Allah.