A person is brought into full communion with the Catholic Church through reception of the three sacraments of Christian initiation—baptism, confirmation, and the holy Eucharist—but the process by which one becomes a Catholic can take different forms. A person who is baptized in the Catholic Church becomes a Catholic at that moment. One’s initiation is deepened by Confirmation and the Eucharist, but one becomes a Catholic at baptism. This is true for children who are baptized Catholic (and receive the other two sacraments later) and for adults who are Baptized, Confirmed, and receive the Eucharist at the same time. Those who have been validly baptized outside the Church become Catholics by making a profession of the Catholic faith and being formally received into the Church. This is normally followed immediately by confirmation and the Eucharist. Before a person is ready to be received into the Church, whether by baptism or by profession of faith, preparation is necessary. The amount and form of this preparation depends on the individual’s circumstance. The most basic division in the kind of preparation needed is between those who are unbaptized and those who have already become Christian through baptism in another church.