"But you will receive power when the holy Spirit comes upon you, and you will be my witnesses in Jerusalem, throughout Judea and Samaria, and to the ends of the earth."

-Acts 1:8

"Baptism, the Eucharist, and the sacrament of Confirmation together constitute the "sacraments of Christian initiation," whose unity must be safeguarded. It must be explained to the faithful that the reception of the sacrament of Confirmation is necessary for the completion of baptismal grace.  For "by the sacrament of Confirmation, [the baptized] are more perfectly bound to the Church and are enriched with a special strength of the Holy Spirit. Hence they are, as true witnesses of Christ, more strictly obliged to spread and defend the faith by word and deed."

-CCC 1285

"The rite of Confirmation recalls and renews the promises made at Baptism and invokes a new outpouring of the Holy Spirit.  Just as Jesus received the outpouring of the Spirit at his baptism in order to carry out his messianic mission, the Church prays that we too may receive the gifts and fruits of the Spirit that enable us to help the Body of Christ grow in unity and missionary zeal. "

-Pope Francis
Pope Francis "Pope reflects on Confirmation, General Audience: English summary." 30 Mayl 2018, https://www.vaticannews.va/en/pope/news/2018-05/pope-general-audience-confirmation-anointing-summary.html