Christian Initiation: becoming Catholic as an adult is accomplished through three sacraments together: Baptism which is the beginning of a new life, Confirmation which is the strengthening and deepening of that life; and Eucharist a Communion which nourishes the disciple with Christs’ Body and Blood for a transformation in Christ.
By means of these sacraments of Christian initiation there is an increased measure of the treasure of a divine life and an advancing toward the perfection of charity. (CCC 1212)