XX.
And that the holy Trinity is to be worshipped without either separation or alienation, is taught us by Paul, who says in his Second Epistle to the Corinthians: “The grace of our Lord Jesus Christ, and the love of God, and the communion of the Holy Ghost, be with you all.” And again, in that epistle he makes this explanation: “Now He which stablisheth us with you in Christ, and hath anointed us, is God, who hath also sealed us, and given the earnest of the Spirit in our hearts.” And still more clearly he writes thus in the same epistle: “When Moses is read, the veil is upon their heart. Nevertheless when it shall turn to the Lord, the veil shall be taken away. Now the Lord is that Spirit; and where the Spirit of the Lord is, there is liberty. But we all with open face beholding as in a glass the glory of the Lord, are changed into the same image, from glory to glory, even as by the Spirit of the Lord.”
Reproduced in full. Translation: Ante-Nicene Fathers, vol. 6 (Roberts and Donaldson, 1886), public domain (Public domain).