This could lead to our understanding that the poet is aware that nothing lasts including the Geats tribes that were bound to disappear from history.
The poet made use of some figures of speech to stress this pessimistic vision. One of the devices used is understatement i.e. using negatives to make a positive statement when Grendel is killed and the poet told us that “the people who lived in Hrothgar kingdom don’t regret Grendel’s death too much” or again describing the lake where Grendel’s mother lived saying” that was no good place to live” and that’s why Tolkien says that
Beowulf is essentially a pagan poem and that we don’t have to pay attention to the Christian elements in it since they really don’t affect the texture as well as the fiber of the entire poem.
Another interpretation to the poem is the one suggested by John C. Mc Galliard and Lee
Patterson who were the editors of the text in the Norton Anthology of world literature