Behoof (&unr_;), n. [OE. to bihove for the use of, AS. beh&unr_;f advantage, a word implied in beh&unr_;flīc necessary; akin to Sw. behof, Dan. behov, G. behuf, and E. heave, the root meaning to seize, hence the meanings “to hold, make use of.” See Heave, v. t.] Advantage; profit; benefit; interest; use.
[1913 Webster]

No mean recompense it brings
To your behoof. Milton.
[1913 Webster]