The process of becoming a member of the Roman Catholic Church generally involves a period of instruction and spiritual formation. This journey typically culminates in the reception of the Sacraments of Initiation: Baptism (if not already baptized in another Christian tradition recognized by the Catholic Church), Confirmation, and Holy Communion. The Rite of Christian Initiation of Adults (RCIA) is the common pathway for adults seeking full communion with the Church. Catechumens, those who are unbaptized, undergo a more extensive period of formation than candidates, those who have been baptized in another Christian tradition.
Full integration into the Catholic Church offers individuals the opportunity to participate fully in the sacraments, to deepen their understanding of Catholic teachings, and to contribute to the life and mission of the Church. Historically, formal processes for conversion and incorporation into the Christian community have existed since the early Church. These processes have evolved over time, reflecting different cultural and societal contexts, but the fundamental goal of preparing individuals for a life of faith and discipleship remains constant.