In the epic poem "Beowulf" by Heaney, the Christian ideology is perpetuated through the villain, Grendel, by making him appear to be cursed and hated not just by the people, but by God.
"Then he who had harrowed the hearts of men with pain and affliction in former times and had given offense to God found that his bodily powers had failed him."
(808-810)
This shows that Grendel was an offense to the people and God. He was the villain to more than just the people, and he was punished for the pain he brought upon others.