The Collaborative International Dictionary of English v.0.48:

Inasmuch \In`as*much"\, adv. [In + as + much.]
   In like degree; in like manner; seeing that; considering
   that; since; -- followed by as. See In as much as, under
   In, prep.
   [1913 Webster]

         Inasmuch as ye did it not to one of the least of these,
         ye did it not to me.                     --Matt. xxv.
                                                  45.

   Syn: Because; since; for; as. See Because.
        [1913 Webster]