Answer:
Beowulf's warriors were very supportive of him when he fought Grendel and his mother, the woman-monster. But when fifty years later, a dragon came to terrorize the Geats, all his warriors fled from him. It was only one companion named Wiglaf that supported Beowulf.
This reveals that humans cannot be trusted and are most times unreliable.
Step-by-step explanation:
The account of Beowulf tells of how this courageous Prince and subsequent King of the Geats defeated Grendel and his mother during the times when they terrorized the Scyldings and King Hrothgar. His warriors supported him immensely then.
But when fifty winters laters, a dragon whose treasures were stolen came to terrorize the Geats, Beowulf's warriors fled from him and only one warrior stood by him. This reveals that human nature can at times be unreliable.