The outpouring of the Holy Spirit fulfills Old Testament prophecy, and continues in the life of the Church, as the Catechism explains:
In the Old Testament the prophets announced that the Spirit of the Lord would rest on the hoped-for Messiah for His saving mission…[Jesus’] whole life and His whole mission are carried out in total communion with the Holy Spirit Whom the Father gives Him “without measure.”
This fullness of the Spirit was not to remain uniquely the Messiah’s, but was to be communicated to the whole messianic people…a promise which [Christ] fulfilled first on Easter Sunday and then more strikingly at Pentecost.
–Catechism paragraphs 1286-87
From that time on, the apostles, in fulfillment of Christ’s will, imparted to the newly baptized by the laying on of hands the gift of the Spirit that completes the grace of Baptism…The imposition of hands is rightly recognized by the Catholic tradition as the origin of the sacrament of Confirmation, which in a certain way perpetuates the grace of Pentecost in the Church.
–Paul VI, quoted in Catechism 1288
Through the anointing of the sacrament of Confirmation, we receive the indelible “mark, the seal of the Holy Spirit. A seal is a symbol of a person, a sign of personal authority, or ownership of an object” (1295).
“This seal of the Holy Spirit marks our total belonging to Christ, our enrollment in His service for ever, as well as the promise of divine protection in the great eschatological trial” (1296).
The “effect of the sacrament of Confirmation is the full outpouring of the Holy Spirit as once granted to the apostles on the day of Pentecost” (1303).
Question for reflection: How have I experienced the power of the Holy Spirit in my life?