the Alexandrian school, where hermeneutics came from [thanks to
  Origen], you can see the root of this way of interpretation -

  "Concerning theological terms, the Alexandrian School uses Greek
  philosophical terms to explain Christian doctrines, because of
  the existing world-wide Greek culture, and in order to deal with
  the philosophers and heretics. But the Alexandrians were not
  enslaved to these terms. This is what St. Athanasius explains
  when he states that

  disputes merely about words must not be suffered to divide those
  who think alike."

  1700 years ago, people debated over words just like today, and
  forget about the meaning _behind_ the words. The Alexandrian
  school attempted to alleviate that issue by interpreting
  allegorically, "symbolically", and most importantly, looking
  into the context within which the writings were written, in an
  attempt to "see through the author's eyes". We think of this as
  very modern but it's not, which is something I think is
  marvelous.