thank you, i appreciate your question. See, i am a very bookish person and fond of technical details and knowledge. From age 12 almost, i am not exaggerating i may have read at least 4000 books ( i am not counting 200 books of ibn e saif and inspector faridi series ), their is a library in front of my house and only it contains about 10,000 books. I would come home from school and then straight go to library, often the librarian would wonder that this kid sometimes take a book from history, then he reads Arabic, then he reads scientific history, then he reads spy novels, then goes to Urdu novels and then into physics books, but my curiosity and knowledge would only increase and even today now i have the same pattern daily, I read like mad from all the knowledge of the world, and internet has even made me more hungry, you would think i am lying but still i wanted to give you a context ....
Now fast forward, why i think Quran is word of God, because their are ayahs of righteousness, i know and understand without righteousness mankind would collapse, how would children grow in an environment where there is no righteousness. What would be the conduct of humans with each other then, we are not some beasts.
There are ayats in Quran and many times repeated of pondering on the birth of a baby. how a cell becomes a full fledged baby, i have devoured the details and it is such a complex process, how some stem cells form eyes, others form heart, how are they in synchronicity during this entire movement of creation. Just read on embryology science and how scientists are baffled by the way stem cell weave the whole baby.
Quran says God has given you intellect, where does this intellect comes from, how are my neural networks in the brain forming this engine of intellect, how are memories stored and how does the job is done by my mind when needed. Believe me my field is now mostly neuroscience and artificial intelligence and i am in communication with top 10 people in the field with citations of more than 1 lac for their research papers and everyone is wondering where is this intellect arising in a human. You have to show a machine 100,000 pictures of a horse and then modern AI recognizes this, but a small child sees a horse one time and then recognizes it for the lifetime.
Quran says you have Rooh i.e spirit what is this spirit/consciousnesses awareness. Roger penrose, the noble prize winner scientist says there is come quantum physics going on, computer science guys disagree and say no this is only neurons connections nothing else, i am going with roger penrose with some benefit of the doubt. But this is a big mystery, why can we not capture a person's consciousnesses, why can we not detect it getting off from a person when he dies. Where does he go.
Quran says we have made this universe such that a man can conquer it, the biggest question of current age is why is universe understandable, you can read papers
"The Unreasonable Effectiveness of Mathematics in the Natural Sciences" is a 1960 article by the physicist Eugene Wigner.
Quran says, think and ponder on how birds are staying in the air ( i am baffled by this direction of God to humans ) , when i read the Bernoulli equations and its applications on a flying wing, the top aerospace scientists tell that we don't know how the Bernoulli equation computes an airlift phenomena. read for example
https://www.scientificamerican.com/article/no-one-can-explain-why-planes-stay-in-the-air/
The more i read Quran, the more i become humble and understand that without righteousness we would collapse, and also i become interested in creation of God and the science becomes my tools to ponder beyond heavens.
God has challenged humans and jinn in Quran in Surah e Rahman to go beyond this earth and heaven, what ? , go beyond meaning we go beyond even the big bang, can we do it, this is now my current focus to invent technology that takes us even beyond the big bang., And see what is going on, Quran makes your mind so vast and big that you are baffled ...........
There are many many other things in Quran which baffle your mind and make you think, i told you like 7 only.
I say, after all this that Quran is a word of the God, i have no other explanation ... The books says it is from one God then it is indeed from the one God ...........