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(Peisistratos:) 'My guest, make your prayer now to the lord Poseidon, for his is the festival you have come to on your arrival; but when you have poured to him and prayed, according to custom, then give this man also a cup of the sweet wine, so that he too can pour, for I think he also will make his prayer to the immortals. All men need the gods. But this one is a younger man than you, and of the same age as I am. This is why I am first giving you the goblet.' (3.43-50)
Nestor's son welcomes Telemachos and Athene (disguised as Mentor), and explains why he's giving her the goblet first: Telemachos is younger. Apparently "respect your elders" is a principle that never goes out of style.