Ex. "He leaped into the lake, would not wait for anyone's/Answer; the heaving water covered him/ Over. For hours he sank through the waves; At last he saw the mud of the bottom."
This is included to show the difficulty of reaching this dreaded destination.
The idea of strength is repeated in each battle, "The iron sang its fierce song,/Sang Beowulf's strength..." "doubled his sterength, he threw her to the floor"
This is included to show that Beowulf has supernatural strength.