The feast of Corpus Christi is given to us to remind us of the abiding presence of Jesus under the form of bread and wine. The gifts of bread and wine brought up at the preparation of the gifts. During the Eucharistic prayer the priest calls the Holy Spirit to come upon those gifts and change them into Jesus’ Body and Blood. During the consecration those elements are transformed. As we receive the Eucharist we pray that we may become that which we have received.