To be necessary; needful.

Then opened he their understanding, that they might understand the scriptures, And said unto them, Thus it is written, and thus it BEHOVED Christ to suffer, and to rise from the dead the third day: and that repentance and remission of sins should be preached in his name among all nations, beginning at Jerusalem. ( Luke 24:45-47 )

Dictionary of Words from the King James Bible. Public Domain. Copy freely.