We begin our profession of faith by saying: “I believe” or “We believe.” Before expounding the Church’s faith, as confessed in the Creed, celebrated in the liturgy, and lived in observance of God’s commandments and in prayer, we must first ask what “to believe” means. Faith is man's response to God, Who reveals Himself and gives Himself to man...(CCC #26)

Order of Christian Initiation of Adults (OCIA) (formerly known as RCIA) is a journey through different spiritual phases of increasing maturity by which one prepares to commit oneself to Jesus Christ and His Church through the search for the sacraments of initiation (Baptism, Confirmation and Eucharist)

The OCIA is for:

• Any unbaptized person who seeks to follow Christ in his Church as preparation for Christian discipleship through baptism, confirmation, and the Eucharist. Such a person, after a period of research on faith and initial conversion to Christ is called: Catechumen.
• Anyone baptized from another Christian community seeking to be Catholic through preparation for Confirmation and Communion. Such a person, after a period of research on faith, is called a Candidate.
• Any baptized Catholic who seeks to increase his devotion as a disciple of Jesus Christ through the realization of the other sacraments of initiation such as Confirmation and Communion.

RCIA IS NOW OCIA

The Rite of Christian Initiation for Adults, or RCIA, as it has been more commonly referred to, will have its name changed to Order of Christian Initiation for Adults, or OCIA, the United States Conference of Catholic Bishops decided this week.
The name change applies both to the process by which one enters the Church and the book that contains the ritual text and prayers for those steps.
 Following the trend of updating all liturgical texts to reflect greater fidelity to the original Latin, the U.S. bishops, meeting in Baltimore for their annual fall assembly, approved on Nov. 17 a revised English edition of the Order of Christian Initiation of Adults. The English version passed 215-0 with two abstentions. 
The action still needs the approval of the Vatican's Congregation for Divine Worship and the Discipline of the Sacraments before it takes effect.

The National Catholic Register