οὐ γὰρ πράξιν ἀγαθὴν, ἀλλὰ καὶ εὖ ποεῖν αὐτὴν → it does not suffice to do good–one must do it well
-εως, ἡcaída, ruina, destrucción τὸ ποτήριον εἰσπτώσεως l. de Eus.M.23.317C a LXX Is.51.17.