Anonymous Olde English - Grendel

Then a powerful demon, a prowler through the dark,
nursed a hard grievance. It harrowed him
to hear the din of the loud banquet
every day in the hall, the harp being struck
and the clear songs of a skilled poet
telling the mastery of man's beginnings,
How the Almighty had made the earth
a gleaming plain girdled with waters;
in his splendour He set the sun and the moon
to be earth's lamplight, lanterns for men,
and filled the broad lap of the world
with branches and leaves; and quickened life
in every other thing that moved.

So times were pleasant for the people there
until finally one, a fiend out of hell,
began to work his evil in the world.
Grendel was the name of the grim demon
haunting the marches, marauding around the heath
and the desolate fens; he had dwelt for a time
among the banished monsters,
Cain's clan, whom the Creator had outlawed
and condemned as outcasts. For the killing of Abel
the Eternal Lord had exacted a price:
Cain got no good for committing that murder
because the Almighty made him anathema
and out of the curse of his exile there sprang
ogres and elves and evil phantoms
and the giants too who strove with God
time and again until He gave then their reward.

So, after nightfall, Grendel set out
for the lofty house, to see how the Ring-Danes
were settling into it after their drink,
and there he came upon them, a company of the best
asleep from their feasting, insensible to pain
and human sorrow. Suddenly then
the God-cursed brute was creating havoc:
greedy and grim.

Anonymous Olde English

http://www.poemhunter.com/poem/grendel-3/