ὁ δ' εὖ ἔρδων θεοὺς ἐλπίδι κυδροτέρᾳ σαίνει κέαρ → but he who does well to the gods cheers his heart with a more glorious hope
useful: P. and V. χρήσιμος, χρηστός, σύμφορος, προσφορος, Ar. and P. ὠφέλιμος, Ar. and V. ὠφέλήσιμος.