Why ancient Greeks fed strangers before asking their names
In ancient Greece, a host who quizzed a traveller before the meal was over was being rude. Xenia, the code of guest-friendship, demanded a bath, food, drink, gifts and a safe escort onward, partly because the humble stranger at the door might turn out to be Zeus himself in disguise.
The word comes from xenos, stranger, and the relationship ran both ways. Hosts owed shelter, protection and generosity; guests owed courtesy, news and stories from beyond, and above all a promise to repay the kindness if the host ever turned up at their own door. Zeus Xenios, protector of foreigners, watched over the arrangement. Tales of theoxenia, in which people reveal their virtue by welcoming a lowly visitor who proves to be a god, taught that every guest deserved treatment fit for a hidden deity. A similar warning surfaces in the Book of Hebrews, about entertaining angels without knowing it.
Breaking the code could start a war. In Homer's telling, the Trojan War began when Paris, a guest in the house of Menelaus of Sparta, carried off his host's wife Helen. That insult to hospitality was also an insult to Zeus, obliging the Achaeans to take revenge. Elsewhere in the Iliad the custom works the other way: Diomedes and Glaucus meet on the battlefield, discover that their grandfathers once hosted each other, and swap armour instead of fighting.
Xenia shaped politics and gifts. The historian Gabriel Herman traced how rulers bound themselves as guest-friends, as when Xerxes became the xenos of Pythios the Lydian, sometimes arranging it through messengers without ever meeting. Special gifts sealed the bond; refusing to return one was close to declaring hostility, and the return gift was meant to match rather than outdo the first. Herodotus records that Polykrates of Samos made such a pact with Amasis of Egypt.
The custom even shaped houses. The Roman architect Vitruvius noted that wealthy Greeks built separate dining rooms and chambers for foreign visitors, hosting them to dinner on the first day and sending chickens, eggs and fresh produce on the next. Painters took the name for pictures of such foods, calling them xenia. Plato, in his Laws, even sorted visiting strangers into four types, each with its own official host.
Source: Xenia (Greek)
