Xenia

Neither an incident from the conflict nor a notable character is mentioned in Xenia. Greek word Xenos, which means guest, also refers to the long-standing custom of showing visitors and guests hospitable hospitality. Respect for both the host and the visitor is one of the core concepts of Xenia. Theoxeny, which holds that occasionally visitors are deities in disguise who assume a skeleton form in the world of humans to interact with them, has historically been acknowledged and practiced by Greeks. And Zeus, also known as Zeus Xenios, who promoted this custom as a sacred ceremony for appeasing the gods, is the defender of this tradition.

When Paris from the family of Priam of Troy came to Sparta, he broke the host's tradition of Xenia by kidnapping Helen in retaliation for the hospitality of the host. According to the Iliad, the Spartan King considered the Trojan prince's blatant carelessness to be a serious affront. The Spartans were compelled to fulfill their obligation to Zeus and revenge for their dishonor. A flagrant violation of a clearly stated rule or tradition of Xenia led to the start of the conflict.