God is the ultimate supernatural being. His supernatural power is boundless. Even if he never does miracles, he is still supernatural in himself. A witch is still magical, even if she never uses her magic.
The supernatural means a power that can change the way nature works. For example, it can cause a man who is dead a week to come back to life. It is bigger than nature.
The concept raises some questions.
Could the supernatural only work in restricted ways? Perhaps it can cure brain tumours but not lung cancer. Perhaps it can start life off but be unable to look after life. The fact that we can see does not mean we have eyes in the back of our heads. The supernatural being bigger than nature does not mean it is unlimited. It may only be bigger than nature under certain conditions.
How strong is the supernatural? Is it able to make you live if you are dead a day? Is two days too late? How long can you be kept alive?
Is it able to raise an ant from the dead but not a man?
Is it able to make it look like a man rose from the dead by arranging that his coma look like death?
The supernatural can work on nature, for it is stronger than nature. But that does not mean it actually does work on nature. It may be able to, and not bother.
If the supernatural seeks to act on nature, perhaps there is another supernatural power that blocks it from doing so? Given all the conflicting magical and supernatural reports in the world, one might wonder if the supernatural is able to agree with itself!
Even if science regards the supernatural as possible, it does not regard it as a useful concept. Not all true things, or things thought to be true, matter. Science only cares about what is testable in principle and in practice. Even if science held that the supernatural could be testable in principle, the fact that it has not been done yet says a lot. Science, in its pragmatism, as good as tells us to forget it.
The supernatural, by definition, is neither testable nor useful.
What is useful comes first. Science, then, is superior to religion and supernatural beliefs.
FINALLY
Big claims need big arguments. If God made all things, without using anything to make them from, you need proof that that would not be magic. But there is no proof. All agree that no human being can understand how God could do it. You don't know if you are talking about magic or not. You cannot give any evidence that you are not. And science needs evidence. God belief does not support science, and in fact contradicts it.