Eucharistic theology

Eucharistic theology is a branch of Christian theology which treats doctrines concerning the Holy Eucharist, also commonly known as the Lord's Supper. It exists exclusively in Christianity and related religions, as others generally do not contain a Eucharistic ceremony.

In the Gospel accounts of Jesus' earthly ministry, a crowd of listeners challenges him regarding the rain of manna before he delivers the famous Bread of Life Discourse (John 6:22-59), and he describes himself as the "True Bread from Heaven". The aforementioned Bread of Life Discourse occurs in the Gospel of John, 6:30-59. Therein, Jesus promises to give His Flesh and Blood, which will give eternal life to all who receive It. In John 6:53, Jesus says, "I tell you the truth, unless you eat the flesh of the Son of Man and drink his blood, you have no life in you." And continues, (v. 54-55) "Whoever eats my flesh and drinks my blood has eternal life, and I will raise him up at the last day. For my flesh is real food and my blood is real drink." Every year, the nation of Israel celebrated the Passover Meal, remembering and celebrating their liberation from captivity in Egypt. It was at the Passover that Jesus Christ celebrated the Last Supper with his Apostles.