Webster's Revised Unabridged Dictionary · 1913

Inasmuch

Inasmuch , adverb

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