And there cannot be a doubt that our Saviour wished to testify, by a solemn rehearsal, that the perfect light of faith is now exhibited, when he said, “Go and teach all nations, baptising them in the name of the Father, and of the Son, and of the Holy Spirit,” (Mt. 28:19), since this is the same thing as to be baptised into the name of the one God, who has been fully manifested in the Father, the Son, and the Spirit. Hence it plainly appears, that the three persons, in whom alone God is known, subsist in the Divine essence.
