xenia

Xenia is an ancient Greek concept of hospitality. It is almost always translated as 'guest-friendship' or 'ritualized friendship'. It is an institutionalized relationship rooted in generosity, gift exchange, and reciprocity. Historically, hospitality towards foreigners and guests (Hellenes not of your polis) was understood as a moral obligation. Hospitality towards foreign Hellenes honored Zeus Xenios (and Athene Xenia), patrons of foreigners.