Beowulf, Ecgtheow’s son, replied:
‘Well, friend Unferth, you have had your say
about Breca and me. But it was mostly beer
that was doing the talking. The truth is this:
when the going was heavy in those high waves,
I was the strongest swimmer of all.’

Beowulf, Seamus Heaney (trans.)

Lines 529-534: It is important for Beowulf to show his strength on all occasions. He has to prove himself a warrior strong enough to meet any challenge thrown at him.