It is usually stated in overt terms and often changes throughout the poem. The correct answer should be "It is not always stated overtly and is understood only by reading the whole poem". This is correct because the theme usually does not change itself, but there can be multiple themes analyzed.
Answer: It’s related for àpex
Beowulf says in the text that "Fate goes ever as fate must." This shows how Anglo-Saxon society highly valued fate and its mysterious ways. He knows that he might defeat Grendel, but he also knows that the reverse might happen. Beowulf is aware of the fact that not his deeds, but fate decides what is going to happen in the future. Based solely on the will of fate, Beowulf defeated Grendel, and fate decided that in the end Beowulf will be defeated by the dragon. It all depends on fate, and Anglo-Saxon people knew that.
During the American colonial period, nearly every colonist was puritanical, and they were very strict in their abiding by the Old Testament in the Christian Bible. However, American romanticism basically went against every practice of Puritanism, creating works of absurd fictions, such as epics and fantasies. Edgar Allen Poe is one of the most renowned romanticism authors in the world. Shakespeare is another, even though he obviously wasn't American.