The Didache was apparently written between 65 and 80 A.D. (some of course say later) and is something of a liturgical manual, with other strands of thought mixed in. Interesting to me is that as early as it was written we see the concept of the eucharist as a sacrifice being taught:
“But every Lord’s day gather yourselves together, and break bread, and give thanksgiving after having confessed your transgressions, that your sacrifice may be pure. But let no one who is at odds with his fellow come together with you, until they be reconciled, that your sacrifice may not be profaned. For this is that which was spoken by the Lord: “In every place and time offer to me a pure sacrifice; for I am a great King, says the Lord, and my name is wonderful among the nations.” (XIV)
Obviously referring to Jesus’ instructions to be right with our brother before coming to worship and also quoting Malachi 1.11:
“For from the rising of the sun even unto the going down of the same my name shall be great among the Gentiles; and in every place incense shall be offered unto my name, and a pure offering: for my name shall be great among the heathen, saith the Lord of hosts.”
The sacrifice of Malachi is equated to the eucharist in the Didache.
