хранитель ключей

From LSJ

οὐ γὰρ πράξιν ἀγαθὴν, ἀλλὰ καὶ εὖ ποεῖν αὐτὴν → it does not suffice to do good–one must do it well

Source

Russian > Greek

κλειδοφύλαξ, κλῃδοῦχος, κλειδοῦχος