The Trinitarian formula was not added to Matthew 28:19 by Constantine in 325.***Ignatius, ca 110
**For those things which the prophets announced, saying, “Until He come for whom it is reserved, and He shall be the expectation of the Gentiles,” have been fulfilled in the Gospel, [our Lord saying,] “Go ye and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost.” (Ignatius of Antioch,
Epistle to the Philadelphians, 9.2)
**Irenaeus, ca 170
**And again, giving to the disciples the power of regeneration into God, He said to them, Go and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost. (Irenaeus,
Against Heresies, Book III, chap 17.1)
**Tertullian, ca 200
**Accordingly, after one of these had been struck off, He commanded the eleven others, on His departure to the Father, to go and teach all nations, who were to be baptized into the Father, and into the Son, and into the Holy Ghost. (Tertullian,
Prescription Against the Heretics, 20)
The myth that the text was added seems to come from a contextless quote used by skeptics and others on the web. The quotation from one of a number of websites reads:“The basic form of our (Matthew 28:19 Trinitarian) profession of faith took shape during the course of the second and third centuries in connection with the ceremony of baptism. So far as its place of origin is concerned, the text (Matthew 28:19) came from the city of Rome.”*However, what does the actual text say from his book? Here is the
2004 reprint of the book online for anyone to view.
His remarks come at the start of a chapter subtitled:
Introductory Remarks on the History and Structure of the Apostles’ Creed. He is
not giving a history on the text of Matthew 28:19.
Now here’s his actual quote from Cardinal Ratzinger:*It may be useful to preface the discussion with a few facts about the origin and structure of the Creed; these will at the same time throw some light on the legitimacy of the procedure. The basic form of our profession of faith took shape during the course of the second and third centuries in connection with the ceremony of baptism. So far as its place of origin is concerned, the text comes from the city of Rome; but its internal origin lies in worship; more precisely, in the conferring of baptism. This again was fundamentally based on the words of the risen Christ recorded in Matthew 28:19: “Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit.”*The words in parentheses from the skeptics’ quote are not in Cardinal Ratzinger’s actual text. The “text” he’s referring to in the skeptic’s contextless quote is the text of the Creed, not the text of Matthew 28:19. And as you can see, Cardinal Ratzinger goes on to quote Matthew 28:19 a few verses later the same way Ignatius, Irenaeus, and Tertullian did.