Matthew 28:19

(de Trin. ii. 1 &c.) For what part of the salvation of men is there that is not contained in this Sacrament? All things are full and perfect, as proceeding from Him who is full and perfect. The nature of His relation is expressed in the title Father; but He is nothing but Father; for not after the manner of men does He derive from somewhat else that He is Father, being Himself Unbegotten, Eternal, and having the source of His being in Himself, known to none, save the Son. The Son is the Offspring of the Unbegotten, One of the One, True of the True, Living of the Living, Perfect of the Perfect, Strength of Strength, Wisdom of Wisdom, Glory of Glory; the Image of the Unseen God, the Form of the Unbegotten Father. Neither can the Holy Spirit be separated from the confession of the Father and the Son. And this consolation of our longing desires is absent from no place. He is the pledge of our hope in the effects of His gifts, He is the light of our minds, He shines in our souls. These things as the heretics cannot change, they introduce into them their human explanations. As Sabellius who identifies the Father with the Son, thinking the distinction to be made rather in name than in person, and setting forth one and the same Person as both Father and Son. As Ebion, who deriving the beginning of His existence from Mary, makes Him not Man of God, but God of man. As the Arians, who derive the form, the power, and the wisdom of God out of nothing, and in time. What wonder then that men should have diverse opinions about the Holy Spirit, who thus rashly after their own pleasure create and change the Son, by whom that Spirit is bestowed?

"Go ye, make disciples of all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost: teaching them to observe all things whatsoever I have commanded you;" giving the one charge with a view to doctrine, the other concerning commandments. And of the Jews He makes no mention, neither brings forward what had been done, nor upbraids Peter with his denial, nor any one of the others with their flight, but having put into their hands a summary of the doctrine, that expressed by the form of baptism, commands them to pour forth over the whole world.

They first then teach all nations, and when taught dip them in water. For it may not be that the body receive the sacrament of Baptism, unless the soul first receive the truth of the Faith. In the name of the Father, the Son, and the Holy Ghost, that they whose Godhead is one should be conferred at once, to name this Trinity, being to name One God. (Didymi Lib. ii. de Spir. Sanct.) And though some one there may be of so averse a spirit as to undertake to baptize in such sort as to omit one of these names, therein contradicting Christ Who ordained this for a law, his baptism will effect nothing; those who are baptized by him will not be at all delivered from their sins. From these words we gather how undivided is the substance of the Trinity, that the Father is verily the Father of the Son, and the Son verily the Son of the Father, and the Holy Spirit the Spirit of both the Father and the Son, and also the Spirit of wisdom and of truth, that is, of the Son of God. This then is the salvation of them that believe, and in this Trinity is wrought the perfect communication of ecclesiastical discipline.

(Serm. 80.) Thus all nations are created a second time to salvation by that one and the same Power, which created them to being.

('Beda; in Hom.' non occ.) He who before His Passion had said, Go not into the way of the Gentiles, (Matt. 10:5.) now, when rising from the dead, says, Go and teach all nations. Hereby let the Jews be put to silence, who say that Christ's coming is to be for their salvation only. Let the Donatists also blush, who, desiring to confine Christ to one place, have said that He is in Africa only, and not in other countries.