Baptism, Eucharist, and Confirmation constitute the "Sacraments of Christian Initiation." Confirmation is necessary for the completion of Baptismal grace. By the Sacrament of Confirmation we are more perfectly bound to the Church and are enriched with a special strength of the Holy Spirit. Hence, we are called to be true witnesses of Jesus Christ, more strictly obliged to spread and defend the faith by word and deed.
It is evident from its celebration that 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.
From this fact, Confirmation brings an increase and deepening of baptismal grace: