Eucharist is one of the three Sacraments of Initiation. It is also called Holy Communion. Here it is understood as the Eucharist received where as the Mass is the Eucharist celebrated. We receive the Body and Blood of Jesus Christ under the appearance of bread and wine. As we eat His Body and drink His Blood we become what we eat, more and more like Christ. Sharing in the Eucharist is a sign of our unity as Catholic Christians.
Unlike the other Sacraments of Initiation which we can only receive once in a lifetime, we may receive Eucharist as often as once a day. We are encouraged to receive Communion regularly so that we can continually be renewed and nourished spiritually. Just as we feed our bodies to stay healthy so we should feed our spirits.
“I am the living bread which came down from heaven; if any one eats of this bread, he will live for ever; and the bread which I shall give for the life of the world is my flesh.” John 6:51
“The holy Eucharist completes Christian initiation. Those who have been raised to the dignity of the royal priesthood by Baptism and configured more deeply to Christ by Confirmation participate with the whole community in the Lord’s own sacrifice by means of the Eucharist.
“At the Last Supper, on the night he was betrayed, our Savior instituted the Eucharistic sacrifice of his Body and Blood. This he did in order to perpetuate the sacrifice of the cross throughout the ages until he should come again, and so to entrust to his beloved Spouse, the Church, a memorial of his death and resurrection: a sacrament of love, a sign of unity, a bond of charity, a Paschal banquet ‘in which Christ is consumed, the mind is filled with grace, and a pledge of future glory is given to us.”