Themes of loyalty and betrayal prominently appear in mythology, often illustrating the complexities of human relationships. Stories about gods and mortals alike explore the consequences of allegiance, as seen in the tale of Achilles and Patroclus, where loyalty drives heroism but also leads to tragedy. Similarly, the betrayal of Judas in Christian mythology provides a powerful commentary on loyalty to one's ideals versus actions. These narratives serve to highlight the virtues of commitment and trust and the profound impacts of betrayal on individuals and communities.