One of the greatest themes of Beowulf is courage. Right from the beginning of the work to the end, there is a strong emphasis on courage. This should not surprise us, because the culture of the work is a veritable warrior culture where glory is sought as the overarching goal of a person's life. This can be seen as well in Roman and Germanic cultures as well, which is the backdrop to Beowulf.
What is interesting as well is that the work's interpretation of Christianity. Christianity is also made to fit their heroic code.
Beowulf, as one would expect, is the model of courage. Often he fights alone. He is the first one to fight and he never backs down. He does not care for his life. Courage and glory are more important. In the end he dies from a battle wound.