Answer:
This is an excerpt from the epic poem Beowulf.
Step-by-step explanation:
Beowulf is an epic anglo-Saxon poem that tells the story of the hero Beowulf, a warrior and honorable prince who has the greatest strength ever seen in a man, his strength is superhuman which allows him to participate in countless battles without suffering any damage, as well as causing a lot of dread in your enemies.
Because of all this power he possesses, he decides to travel and save a population from a showy creature that is the real evil, a terrible being that eats whole men, called Grendel.
In the excerpt shown in the question above, we can see Beowulf claiming that he will battle Grendel and free the population from his attacks.