In a response of two to three sentences, explain how the following lines contribute to Beowulf's characterization as a hero.
"The comer–from–far–land had cleansed then of evil,
Wise and valiant, the war–hall of Hrothgar,
Saved it from violence. He joyed in the night–work,
In repute for prowess; the prince of the Geatmen
For the East–Danish people his boast had accomplished"