How very odd, though typical, that you don't even know what the word "Eucharist" means! HINT...it is NOT "this is my body".
The Greek noun εὐχαριστία (eucharistia), meaning "thanksgiving", is not used in the New Testament as a name for the rite, however, the related verb is found in New Testament accounts of the Last Supper, including the earliest such account:
For I received from the Lord what I also delivered to you, that the Lord Jesus on the night when he was betrayed took bread, and when he had given thanks, he broke it, and said, "This is my body which is for you. Do this in remembrance of me". (1 Corinthians 11:23-24)
The term "Eucharist" (thanksgiving) is that by which the rite is referred by the Didache (late 1st or early 2nd century), Ignatius of Antioch (who died between 98 and 117) and Justin Martyr (writing between 147 and 167http://en.wikipedia.org/wiki/Eucharist
“The term “Eucharist” (thanksgiving) is that by which the rite is referred by the Didache (late 1st or early 2nd century)”
The best analysis I’ve ever seen about the Didache demonstrated it was a much earlier Jewish document that was edited to become a Christian document, then edited and updated over time. At this point, no one knows which changes happened at which point.
Now, just imagine if the Roman church took it upon itself to edit Scripture every time they added to their beliefs over the past millennia. Instead of just making up “traditions”, pretend they instead edited Scripture to support their changing beliefs.
You would have more information documenting the generic heritage of a labradoodle, than a document that was contaminated like that. This is the story of the Didache.
While it is interesting, it is not authoritative. Nor is dating possible, since there would be multiple dates as it was updated.
Oh good grief, I know what Eucharist means, I was just connecting the word Eucharist with the words that created it. The words This is My Body, however, gave us the Eucharist and Catholics are very fortunate to have accepted that gift from Christ....unlike some.