Don't talk about the argument. Just say "he's insane" and that suffices as an answer. Nice critical thinking job! A Rasberry Nobel to you!
Who said anybody was insane?
You made an argument, hinted at it anyway, that the quote from the book of Job was so accurate that it could only have come from an all-knowing God.
I disagree and consider the quote rather vague and short, it could equally describe a lot of cosmological systems, including the one we would expect to find among the writers of the book if they did not have access to any particular 'scientific' knowledge and instead relied on the cosmology prevalent in the region. They certainly seem to have taken the whole myth as the base of Job from such a regional tradition.
I also pointed it that this ancient cosmological system would actually be much more consistent with other part of the OT that are incompatible with modern scientific knowledge, parts that are, for the most part, left out by Christian apologetists.
So, between the two hypothesis:
-Ancient Hebrews were magic and knew something uncanny about the universe.
-Yet; they only mention it in a short an ambiguous quote and the many other references are demonstrably wrong.
Or:
-Ancient Hebrews relied on tradition and knowledge common through the region at the time.
-This cosmology was applied consistently between the book of Job and the book of Genesis, compiled, according to scholars, at the same time by roughly the same people.
-In one instance, a passing reference to this cosmology is brief and ambiguous enough so that not to contradict directly what was later discovered by modern science.
I will chose the second one as more likely.