The RCIA (Rite of Christian Initiation of Adults) is a process of initiation into the Catholic Community of Faith for persons who are experiencing a conversion in their lives and seeking either Christian baptism in the Catholic Church or full communion with the Catholic tradition of Eucharist and Confirmation.
A visible sign
An action is performed by a minister (usually a priest). For example, when a baby is baptized in the church the priest pours water over its head and at the same time says the words “I baptize you in the name of the Father and of the Son and of the Holy Spirit.” That is a visible sign.
Instituted by Christ
The Lord Jesus Christ instructed His church to offer the seven sacraments to His followers. For example, His directive to His disciples in Matthew’s Gospel (28/19), “Go then, to all peoples everywhere and make them my disciples; baptize them in the name of the Father, the Son, and the Holy Spirit and teach them to obey everything I have commanded you.”
To give grace
Grace is God’s free gift of Himself as the controlling influence in our life and the decisions we make once we have committed ourselves to Him in faith.