How does the christian description of the devil fit the way of evil characters were described in literature in Beowulf?

In Beowulf, evil characters like Grendel and his mother embody characteristics similar to the Christian description of the devil, such as being powerful, malicious, and embodiments of darkness and chaos. Both the devil and these literary monsters serve as antagonists who must be defeated to restore order and protect humanity. The concept of evil presented in Beowulf can be seen as aligned with Christian beliefs about the nature of evil and the battle between good and evil.