οὐ γὰρ πράξιν ἀγαθὴν, ἀλλὰ καὶ εὖ ποεῖν αὐτὴν → it does not suffice to do good–one must do it well
jūrātō: adv., v. iuro.
iūrātō, Adv. (iuratus), mit einem Eide, eidlich, Paul. dig. 2, 8, 16. Corp. inscr. Lat. 10, 4842, 29.