Confirmation in the Catholic Church
According to Catholic doctrine, in the sacrament of Confirmation, the faithful are sealed with the gift of the Holy Spirit and are strengthened in their Christian life.
Recall then that you have received the spiritual seal, the Spirit of wisdom and understanding and courage, the spirit of right judgment and courage, the spirit of knowledge and reverence, the Spirit of holy fear in God's presence. Guard what you have received. God our Father has marked you with his sign; Christ the Lord has confirmed you and has placed his pledge, the Spirit, in your heart. 
Now when the apostles, who were in Jerusalem, had heard that Samaria had received the word of God, they sent unto them Peter and John. Who, when they were come down, prayed for them, that they might receive the Holy Ghost. For he was not as yet come upon any of them; but they were only baptized in the name of the Lord Jesus. Then they laid their hands upon them, and they received the Holy Ghost.