Interesting article. Let's not forget though, that God is nature, and his miracles thus cannot be "supernatural," by the very definition. It's not so hard to believe that God would use a meteor or two, to send His sign, and it's really cool how he got the meteor to spell out "conquer by this."
Let's not forget though, that God is nature,
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In the judeo christian tradition God resides outside of nature.
Only in Eastern philosophy is god nature.
A better way to put it is that God is natural, with all of nature being a product of His divine providence, including those phenomena we are inclined (arbitrarily) to call "miracles," or the "supernatural."
That's not the Christian view of God. But maybe you know that already.