Let's hear some of the wisdoms behind this, so we may realize our value and become aware of our rank and responsibilities.

(1) First Wisdom: The Ummah has been made a witness

Allah Almighty states in the noble Quran:

وَ كَذٰلِكَ جَعَلْنٰكُمْ اُمَّةً وَّسَطًا لِّتَكُوْنُوْا شُهَدَآءَ

And thus, We made you an exceptional nation so that you become witnesses^[1]

This is one of the wisdoms behind the Ummah of Islam being the final one. If it had been created as the first Ummah, it could not have testified on behalf of those who came after. It was made last so that it may serve as a witness over the previous nations.

The testimony of the Ummah on the Day of Judgement

There is a Hadith in Ṣaḥīḥ al-Bukhārī where the final Prophet صَلَّی اللہُ تَعَالٰی عَلَیْہِ وَاٰلِہٖ وَسَلَّمَ  said:

On the Day of Judgement, Prophet Nūḥ عَـلَيْـهِ الـسَّـلاَم will be called. He will say, “I am present, O my Lord!” 

He will then be asked, “Did you convey [to your nation]?”

He will reply, “Yes.”

Then his nation will be asked, “Did he convey to you?”

They [the unfortunate ones who were preached to for 950 years] will respond, “No warner came to us!”

Then it will be said to Prophet Nūḥ عَـلَيْـهِ الـسَّـلاَم, “Who will testify for you?”

He will say, “Muhammad صَلَّی اللہُ تَعَالٰی عَلَیْہِ وَاٰلِہٖ وَسَلَّمَ and his Ummah.”