προαγορεύειν

From LSJ

ξένους ξένιζε, καὶ σὺ γὰρ ξένος γ' ἔσῃ → be hospitable to guests; you too will be a guest

Source

Greek > English (Woodhouse Verbs Reversed)

(see also προαγορεύω): declare, predict, say beforehand, tell beforehand