Origin of the Eucharist the "Didache", "1 Clement" and Ignatius of Antioch provide glimpses of what Christians were doing in their eucharists. Later sources, Tertullian and the "Apostolic Tradition", offer some details from around the year 200. Once the Church "went public" after the conversion of Constantine the Great in the second decade of the fourth century, it was clear that the Eucharist was established as a central part of Christian life. Contemporary scholars debate whether Jesus meant to institute a ritual at his Last Supper; whether the Last Supper was an actual historical event in any way related to the undisputed early "Lord's
Eucharist mainly of readings from scripture (the Bible) and a homily preached by a priest or deacon and is essentially distinct and separate from the Sacrament of the Eucharist, which comprises the entirety of the Liturgy of the Eucharist, so the Eucharist itself is only about one half of the Mass. (It is also possible and permissible in the Latin Rite for a priest to consecrate and distribute the Eucharist outside the ritual structure of the Mass—such an event is often called a communion service—but it is much more common to celebrate a full Mass.) Among the many other terms used