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 in the Catholic Church worship of Christ, who is believed to be truly present. The host is generally reserved in the tabernacle after Mass and displayed in a monstrance during adoration. As a Catholic devotion, Eucharistic adoration and meditation are more than merely looking at the host, but a continuation of what was celebrated in the Eucharist. From a theological perspective, the adoration is a form of latria, based on the tenet of the presence of Christ in the Blessed Host. Christian meditation performed in the presence of the Eucharist outside Mass is called "Eucharistic meditation". It has been practiced by saints such as