Didn't Aristotle define God as pure act? Wouldn't this God transcend nature?
In that sense, yes. But I was thinking more along the lines of cosmology and the theory of creation ex nihilo. Aristotle's God is confined to a universe with no beginning or end. I think the God of revealed religion proposes not a God confined to a universe with no beginning or end(Aristotelian), or a cyclic one of creation/re-creation(Eastern), but one which transcends even those. One who gives purpose as to why there's even a universe at all.