ἐν τῇ ἡλικίᾳ εἶναι
From LSJ
ξένους ξένιζε, καὶ σὺ γὰρ ξένος γ' ἔσῃ → be hospitable to guests; you too will be a guest
ξένους ξένιζε, καὶ σὺ γὰρ ξένος γ' ἔσῃ → be hospitable to guests; you too will be a guest
be of an age for service, be of military age