I disagree that they were baptizing in Jesus name only for the first four centuries after Jesus. We are talking about up until about 430 ad?
For example, the didache is usually dated to about 50 to 120 ad. It uses the trinitarian formula.
http://earlychristianwritings.com/text/didache-roberts.html
I think the Didache is a fake.
It claims it's from the Apostles, teaches fasting (we never see the Disciples/Apostles ever fast).
And it teach running water or sprinkle water for baptizing and we clearly see the apostles dunking full immersed.
It's clearly a Catholic literature trying to be passed off as the Apostles.
And the dating of 50-120 AD is verbal, but according to the actual papyrus:
Late 4th Century:
Didache 6-16 - University of Pennsylvania
ccat.sas.upenn.edu/rs/rak/publics/
didache/
didache.htm
(2) POxy is the Greek Oxyrhynchus
Papyrus 1782,
dating from the late fourth century, which consists of two fragments of a codex, and preserves
Didache 1.3b-4a and 2.7b--3.2a in a slightly variant form (with some significant expansion) from H.
I think it's very important! Jesus' final Ascent after the 40 days would have taken place from somewhere.
If it was Galilee, then Luke is incorrect.
If it was Bethany, then the discourse in Matthew 28 is not just before his ascent.
(The part in Mark 16 where Jesus ascends is not in the Greek text we agreed to use.)
19 The Lord, indeed, then, after speaking with them, was taken up into heaven and is seated at the right hand of God."
Ὁ μὲν οὖν κύριος Ἰησοῦς μετὰ τὸ λαλῆσαι αὐτοῖς ἀνελήμφθη εἰς τὸν οὐρανὸν καὶ ἐκάθισεν ἐκ δεξιῶν τοῦ θεοῦ.
However, it is in the Ancient Greek.
I don't know, Brother, using a version that removes Scripture when the ancient texts have that Scripture is interesting.
Why would that text be in the ancient version but modern day scholars claim it was an add on.
What's in Mark 16 that disproves their stance they desperately want it removed?