The Sacred Liturgy No. 2

Christ is present in the Liturgy…
Jesus Christ is present and active in the Mass in four ways. He is present in the priest, who acts in persona Christi capitis, “in the person of Christ the head,” when offering the Sacrifice of the Mass. He is present in the liturgical assembly, when the members of the Body of Christ are gathered in His name for worship. He is present when His Word, the Sacred Scriptures, is proclaimed. Substantially and continuously, He is present in the Eucharist. The Body and Blood of Jesus become truly present when the priest recites the words of consecration and remain present under the signs of bread and wine.
Christ is the real “celebrant” of the Liturgy. When we gather for worship, we do so mindful that we are entering into a mystery greater than ourselves, a sacred event where Christ our God is made manifest to us.
GIRM 27