ὡς μὴ ἂν διὰ μόνης τῆς εἰς τὸν χριστὸν πίστεως καὶ τοῦ κατ᾽ αὐτὴν βίου σωθησομένοις. The addition of the last clause reveals the difference between the doctrine of Eusebius’ time and the doctrine of Paul. Not until the Reformation was Paul understood and the true formula, διὰ μόνης τῆς εἰς τὸν χριστὸν πίστεως, restored.