What is the poetic language and biblical allusions of "Beowulf"?

Beowulf is an epic poem, which is a long poem that tells the story of  a hero.  Because it is a poem, it is full of "poetic language."  Some elements of the poem include imagery, metaphor, and theme, all of which add to its "language" and meaning.  For example, vivid images contained in the poem include the description of the battle of Beowulf and Grendel, in which Beowulf rips Grendel's arm from its socket and takes it back to Hrothgar's kingdom.  Biblical allusions include the presence of good vs. evil, a hero who saves people (Jesus can be compared to Beowulf), and the hero sacrificing himself for the good of the people (Jesus sacrificed himself for the good of humankind and Beowulf sacrificed himself for the good of his people).