Augustine of Hippo

(Tr. c) By pouring love into the hearts of believers, and making them spiritual, and so able to see that the Son Whom they had known before only according to the flesh, and thought a man like themselves, was equal to the Father. Or certainly because that love filling them with boldness, and casting out fear, they proclaimed Christ to men, and so spread His fame throughout the whole world. For what they were going to do in the power of the Holy Ghost, this the Holy Ghost says He does Himself.