[11] And they shall not teach, each one his fellow citizen and kinsman, saying, 'Know the Lord,' for all shall know me, from least to greatest. [12] For I will forgive their evildoing and remember their sins no more." [13] When he speaks of a "new" covenant, he declares the first one obsolete. And what has become obsolete and has grown old is close to disappearing.
(CCC 1106) Together with the anamnesis, the epiclesis is at the heart of each sacramental celebration, most especially of the Eucharist: You ask how the bread becomes the Body of Christ, and the wine... the Blood of Christ I shall tell you: the Holy Spirit comes upon them and accomplishes what surpasses every word and thought.... Let it be enough for you to understand that it is by the Holy Spirit, just as it was of the Holy Virgin and by the Holy Spirit that the Lord, through and in himself, took flesh (St. John Damascene, De fide orth. 4, 13: PG 94, 1145A). (CCC 1090) "In the earthly liturgy we share 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, Minister of the sanctuary and of the true tabernacle. With all the warriors of the heavenly army we sing a hymn of glory to the Lord; venerating the memory of the saints, we hope for some part and fellowship with them; we eagerly await the Savior, our Lord Jesus Christ, until he, our life, shall appear and we too will appear with him in glory" (SC 8; cf. LG 50). (CCC 1110) In the liturgy of the Church, God the Father is blessed and adored as the source of all the blessings of creation and salvation with which he has blessed us in his Son, in order to give us the Spirit of filial adoption. (CCC 1111) Christ's work in the liturgy is sacramental: because his mystery of salvation is made present there by the power of his Holy Spirit; because his Body, which is the Church, is like a sacrament (sign and instrument) in which the Holy Spirit dispenses the mystery of salvation; and because through her liturgical actions the pilgrim Church already participates, as by a foretaste, in the heavenly liturgy. (CCC 1112) The mission of the Holy Spirit in the liturgy of the Church is to prepare the assembly to encounter Christ; to recall and manifest Christ to the faith of the assembly; to make the saving work of Christ present and active by his transforming power; and to make the gift of communion bear fruit in the Church.
