If multiple scholars all seem to agree that the Quran can be regarded as the finest piece of literature in the Arabic language then whats to "chuckle"?
Anwar Chejne, who wrote "The Arabic Language: Its Role in History"
Kristina Nelson, who wrote "The Art of Reciting the Quran"
Stefan Wild, who wrote "Encounters of Words and Texts: Intercultural Studies in Honor of Stefan Wild"
Suha Taji-Farouki, who wrote "Modern Muslim Intellectuals and the Quran"
Maybe a similar type of chuckle was taking place on the decks of the Titanic just before the ship went down? I have heard of cases where people sometimes laugh to keep themselves from crying.
Can you provide us with examples about what they said about the Quran, and why we should respect their opinion on the subject, instead of you just dropping their names in your post as if these names are supposed to have some special significance to us?
For example, the first name you mention is Anwar Chejine. I have managed to find some information
about professor Chejine, and he certainly seems to have been an expert on the subject. But try as I might, I can't find any quotes of his opinions about the Quran. (It's hard to find information on the internet about a relatively obscure academic who died before the internet existed.)
Moving on to the next name on your list, Kristina Nelson. Very hard to find anything about her... there are lots of people with the same name, which makes it tricky to search for information about
her specifically. I'm assuming that she's not the same Kristina Nelson that does the weather report for KVAL-TV. And that she's not the Kristina Nelson who creates artworks from crayon. And that she's not the Kristina Nelson who plays woman's basketball for the University of Notre Dame. Far too many women by the same name, and typing the name into Wikipedia doesn't get me anything. So who is the Kristina Nelson that wrote what's apparently a highly acclaimed book about reciting the Quran, and why should we care about what she has to say?
What
do these people you list actually say about the literary quality of the Quran, and why should
we accept them as unbiased experts on the topic?
And even if you (somehow) convinced us that the Quran really is the finest work literature in the Arabic language, why should we regard this as necessarily a miracle?
For centuries Homer's epic poem
The Iliad was widely regarded by the ancient Greeks as their finest work of literature, and according to some sources he couldn't read or write either (on account of being blind... assuming that the accounts of him being blind are actually true, which is questionable). Should we count that as a miracle too?
"The manuscripts have been dated to various ranges between 408 BCE and 318 CE." So these would be considered to be some of the earliest sources for the period which we are discussing? But most atheist are likely reject even these, I can't help that.
Why should atheists accept them simply because they're old? We have clay tablets dating back to around 2000 BC containing fragments of the Epic Of Gilgamesh, and fragments of independent poems relating to the Epic from around 2200 BC... should we then accept these as evidence that the events described in the Epic actually happened?
Even the US Congress seems to think that he was a man worthy of honor, not a liar
How is the opinion of the US Congress in any way relevant? How much time has Congress spent on academic matters of historical and archeological research? How many members of the US Congress have any background in historical research or archeology?