The prophets of the Old Testament foretold that God's Spirit would rest upon the Messiah to sustain his mission. Their prophecy was fulfilled when Jesus the Messiah was conceived by the Spirit and born of the Virgin Mary. The Holy Spirit descended on Jesus on the occasion of his baptism by John. Jesus' entire mission occurred in communion with the Spirit. Before he died, Jesus promised that the Spirit would be given to the Apostles and to the entire Church. After his death, he was raised by the Father in the power of the Spirit.
Confirmation deepens our baptismal life that calls us to be missionary witnesses of Jesus Christ in our families, neighborhoods, society, and the world. . . . We receive the message of faith in a deeper and more intensive manner with great emphasis given to the person of Jesus Christ, who asked the Father to give the Holy Spirit to the Church for building up the community in loving service.
Confirmation connects us to a larger community. The relationship of the bishop (who presides over the Rite of Confirmation) with the church community in a given area reminds us of our connection to the larger community of the Church, which is global. Thus, Confirmation reminds us that we belong to the Universal Church and to a local parish community (CCC, no. 1309). The sacred Chrism oil used during Confirmation points to the community’s sharing of the Spirit, since the same oil is used during Baptism and to anoint bishops and priests during the Sacrament of Holy Orders. Oil for the Anointing of the Sick is also consecrated during Holy Week. The symbol of oil reminds us of the action of the Holy Spirit upon us as members in the Church family.
At Confirmation, we receive the gifts of the Holy Spirit. In the Gospels, the same Spirit that descended on Jesus during Baptism descends on the Apostles at Pentecost (CCC, nos. 1285-1287). The readings and homily we hear at Confirmation remind us that this same Spirit is present to us today. At Confirmation, we receive diverse spiritual gifts that work together for the “common good” and “the building up of the Church, to the well-being of humanity and to the needs of the world” (Pope John Paul II, Christifideles Laici [The Vocation and the Mission of the Lay Faithful in the Church and in the World], no. 24). At Confirmation, we pray for an increase of the gifts of the Spirit in our own lives in order to serve the cause of justice and peace in Church and world. (Usccb)