Tractates on the Gospel of John

⁵ “But you,” He adds, “shall know Him; for He shall dwell with you, and be in you.” He will be in them, that He may dwell with them; He will not dwell with them to the end that He may be in them: for the being anywhere is prior to the dwelling there. But to prevent us from imagining that His words, “He shall dwell with you,” were spoken in the same sense as that in which a guest usually dwells with a man in a visible way, He explained what “He shall dwell with you” meant, when He added the words, “He shall be in you.” He is seen, therefore, in an invisible way: nor can we have any knowledge of Him unless He be in us. For it is in a similar way that we come to see our conscience within us: for we see the face of another, but we cannot see our own; but it is our own conscience we see, not another's. And yet conscience is never anywhere but within us: but the Holy Spirit can be also apart from us, since He is given that He may also be in us. But we cannot see and know Him in the only way in which He may be seen and known, unless He be in us.