Behemoth (Hebrew בהמות, behemot; Arabic بهيموث bahīmūth, or بهموت bahamūt), pronounced /bɨˈhiməθ/, is a biblical creature mentioned in the Book of Job, 40:15-24. The word is most likely a plural form of בהמה (bəhēmāh), meaning beast or large animal. It may be an example of pluralis excellentiae, a Hebrew method of expressing greatness by pluralizing a noun; it thus indicates that Behemoth is the largest and most powerful animal ever to exist. Metaphorically, the name has come to be used for any extremely large or powerful entity.
Thats where the band got their name.
Behemoth is a Polish blackened death metal[1] band from Gdańsk, formed in 1991. They are considered to have played an important role in establishing the Polish extreme metal underground[2][3], alongside bands such as Vader, Decapitated, Vesania and Hate.
Until the late 1990s, the band played traditional black metal with heathen lyrical content, but soon changed to that of occult and thelemic themes written by their lead vocalist Nergal and Krzysztof Azarewicz. With the 1999 release of Satanica, the band showed their presence in the blackened death metal scene, while retaining their own signature style characterized by the drum work of Inferno, multi-layered vocals and Nile-style Middle-Eastern influences. Even though Behemoth has been labeled as death metal, black metal or thrash influenced, Nergal has mentioned that he doesn't like the band to be labeled[4].
Source : Wikipedia
