Warm welcome extended to visitors: part of the AncientCustom(s) of Mankind.

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I like the Arabic welcome at the door: 
'Bayt-i Bayt-kum': 'My house is your house'. Seems quite appropriate to Wiki.

-- MartinNoutch

The SpanishLanguage adopted this saying, doubtless a result of Moorish influence.

Peter Jones' excellent ''Learn Ancient Greek'' (ISBN:0715627589) reveals that /xenos/ meant both "stranger" and "guest".

Zeus, the king of the gods, was also the god of hospitality and protector of guests. They took it /very/ seriously.

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That does the nice second meaning for the word "xenophobia"...

-- AlexeyDolganov

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See also StBenedictsRule