The following is from: Christian Beginnings, Geza Vermes pages 91, 92, 98
Paul inherited from his predecessors a second great cult practice, the communal meal, referred to as the ‘breaking of the bread’ as well as ‘thanksgiving’ or eucharist in Greek. As in the case of baptism, Paul supplied a new meaning to the community meal and turned it into an imitation and repetition of the ‘Lord’s Supper’. …
Paul implies that the mythical significance of this meal was revealed to him directly by Christ: ‘I received from the Lord what I also handed on to you’ (1 Cor. 11:23). He does not say that it came to him through apostolic tradition as the story of the death, burial and resurrection of the Saviour: ‘I handed over to you what I in turn had received’ (1 Cor. 15:3). If my understanding is correct, the mystical significance of the Last Supper must not be attributed to the Synoptic evangelists composing their accounts between ad 70 and 100, but to Paul writing in the early 50s. It seems that the idea entered the tradition of the Gospels of Mark and Matthew through Luke, Paul’s disciple, whose Last Supper account mirrors that of his teacher. Only Paul and Luke mention Jesus’ command relating to the repetition of the ritual. For Paul the rite comprised a twofold allegory: the participation of the believers in the redemptive acts of the death and resurrection of Christ, and their assimilation into the mystical body of Jesus and the church. … The breaking of the bread or the ‘Lord’s Supper’, as perceived through Paul’s eyes, became the cornerstone of the cultic edifice of Gentile Christianity in his day and has remained so ever since.
None of the letters of Paul include a general code of behaviour for members of his churches. As a rule, he offered them, in the concluding part of several of his letters, a long or short list of moral rules inspired by, and reflecting, the Jewish ethics of the age….
It is remarkable that neither the Pastoral Epistles nor the Teaching of the Twelve Apostles assign any particular role to the bishops and presbyters in the conduct of the Lord’s Supper. Their duties were exclusively didactic and pastoral. The Eucharist was a communal ceremony and the other principal rite, baptism, also could be administered by anyone.