Confirmation is the sacrament of initiation in which a baptized Catholic, through prayers, imposition of hands and the anointing with chrism, receives a special outpouring of the Holy Spirit that completes Baptismal grace. This sacrament impresses a character, and by it the baptized, continuing on the path of Christian initiation, are enriched by the gifts of the Holy Spirit and bound more perfectly to the Church. It strengthens them and obliges them more firmly to be witnesses to Christ by word and deed and to spread and defend the faith!
“Now when the apostles at Jerusalem heard that Samaria had received the work of God, they sent to them Peter and John, who came down and prayed for them that they might receive the Holy Spirit; for it had not yet fallen on any of them, but they had only been baptized in the name of the Lord Jesus. Then they laid their hands on them and they received the Holy Spirit” (Acts 8:14-17)