There is very deep relation between Jesus? human body, Church and Eucharist, which is expressed just by the designation ?the Body of Christ?, applied to the all three realities. Eucharist is therefore not only the sacrament of the Christ?s human body, but also of his mystical body, the Church.
It is the sacrament of the communion and unity. The liturgy of the mass needs to become for us in different ways the school of unity, so that we can live during the celebration of Eucharist, that we are many, but forming only one body.