Jerome
Catena Aurea · Matthäusevangelium 28
Then the eleven disciples went away into Galilee, into a mountain where Jesus had appointed them. And when they saw him, they worshipped him: but some doubted. And Jesus came and spake unto them, saying, All power is given unto me in heaven and in earth. Go ye therefore, and teach 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: and, lo, I am with you alway, even unto the end of the world. Amen.
(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.