Salaam

Greating to all, and sorry for my bad english.

I will now explain my own opinion. I may add that what I am going to advance is my current understanding, and it needs to be backed by further study of the Quran.

I hope that even if you are convinced about your current understanding, you leave the door open to new understanding for you in the futur, and other understanding for your brothers actually.

Before commenting your views I will sugest to read a booklet by Abu Hamid Al-Ghazaly with the title (faysalu at-tafriqa).
Even if the subject of the book is the takfir he actually went deeply discussing the different ways muslims could understand verses in the Books depending in their nature and ability (5 categories). He was definitly right, we Human differt. And this mean that if God send a message to All mankind it means that His message Must be untelligible and trusted with as many way as there is different type of minds (way of beliving = type d'assentiment, de croyance).
Some of us needs miracle. Some others don't.
Some are quite happy and confident in sticking to litteral meaning. Others need to go to metaphories.

I have read what you wrote (in this topic) about the possibility or not of miracles for the messengers. I conclude that you do not believe in miracles (for any prophete) not because you have a rational (definitive) proof (you do not give a real one). You do so cause your personality, the way you belive Do Not need miracles. It does not fit with you. In fact, it hirts your Iman more than helping it. So be it. You're not alone in this case. You belive (dont need "miracle", but other rational things) and that's the goal. The Message fit with you ALSO !
But I hope you are aware that other people differt from you.
If they need to belive in another way than you, this is not a problem. The most important thing is that, as you do, they believe in God, and do their best to be helpfull and bestdoing to mankind (begining by theirselfs) to gain the hereafter.

In the Quran, God devotes a lot of words to tell us about the fate of all nations. There is a common pattern to all theses stories
When a nation sticks to God?s laws (values, principles?), it prospers.
And, reciprocally, when a nation abandons God?s laws, it perishes (the nation can have success for some time, but it eventually perishes).

The main message of the Quran to the people is the following believe in God, stick to God?s laws and you will have success in this life and in the hereafter.

Agree mainly. But I think that this main God's message (what you call God's law) is Al-Ihsaan = Good doing (?). If it is the case, it means that these God's laws are not really related with a scripture revelation. Nature (another bunch of God's ayah) and our souls direct us toward this good-doing.

Ibrahim found the path before receiving any revelation.
Saba2 queen and her kingdom seems to be mentioned in good terms in the quran.

For example I cannot consider Christianity to be the message of God because it holds that the Christians, trough baptism, will be saved.
In the same way, Sunnis and Shiaism promote the superiority of their sect.

But we know that Christianity, Sunnism and Shi3ism all of them originated from God's messages.

Why I don?t believe in miracles ?

I am aware that, if God willed so, he could do miracles (exceptional breaking of one of these laws). But he doesn?t, because a sound faith should not rely on this.
In the Quran, we see that only the unbelievers need miracles. The knowledgeable find God?s message self-evident. Thus, asking for miracles is no more than a sign of disbelief.

Really do not agree. A sound faith for You have not to rely on tangible things like miracle. But for others it is not sure.
The case of Ibrahim and the need to (...li-yaTma2inna qalby...) is against your arguemtns.

Since the message God revealed to his messengers was the same as the one he revealed to Muhammad, and

Again do not agree at all. It is impossible that the message to people living thounsend of years before Jesus have to be the same as the message to muhammed.

From the quran we can find many examples.

Sorry, I have to cointinue later.

Grearting