CONSTITUTION ON THE SACRED LITURGY
5. God who "wills that all men be saved and come to the knowledge of the truth" (1 Tim. 2:4), "who in many and various ways spoke in times past to the fathers by the prophets" (Heb. 1:1), when the fullness of time had come sent His Son, the Word made flesh, anointed by the Holy Spirit, to preach the the gospel to the poor, to heal the contrite of heart , to be a "bodily and spiritual medicine" , the Mediator between God and man . For His humanity, united with the person of the Word, was the instrument of our salvation. Therefore in Christ "the perfect achievement of our reconciliation came forth, and the fullness of divine worship was given to us" .
7. To accomplish so great a work, Christ is always present in His Church, especially in her liturgical celebrations. He is present in the sacrifice of the Mass, not only in the person of His minister, "the same now offering, through the ministry of priests, who formerly offered himself on the cross" , but especially under the Eucharistic species. By His power He is present in the sacraments, so that when a man baptizes it is really Christ Himself who baptizes . He is present in His word, since it is He Himself who speaks when the holy scriptures are read in the Church. He is present, lastly, when the Church prays and sings, for He promised: "Where two or three are gathered together in my name, there am I in the midst of them" (Matt. 18:20) .
8. In the earthly liturgy we take part in a foretaste of that heavenly liturgy which is celebrated in the holy city of Jerusalem toward which we journey as pilgrims, where Christ is sitting at the right hand of God, a minister of the holies and of the true tabernacle ; we sing a hymn to the Lord's glory with all the warriors of the heavenly army; venerating the memory of the saints, we hope for some part and fellowship with them; we eagerly await the Saviour, Our Lord Jesus Christ, until He, our life, shall appear and we too will appear with Him in glory .
Constitution on The Sacred Liturgy -Document
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