Holy Baptism is the basis of the whole Christian life, the gateway to life in the Spirit (vitae spiritualis ianua), and the door which gives access to the other sacraments. Through Baptism we are freed from sin and reborn as sons of God; we become members of Christ, are incorporated into the Church and made sharers in her mission: “Baptism is the sacrament of regeneration through water and in the word.” (Catechism of the Catholic Church, #1217)
The Sacrament of Baptism is often called "The door of the Church," because it is the first of the seven sacraments not only in time (since most Catholics receive it as infants) but in priority, since the reception of the other sacraments depends on it. It is the first of the three Sacraments of Initiation, the other two being the Sacrament of Confirmation and the Sacrament of Holy Eucharist. Once baptized, a person becomes a member of the Church. Traditionally, the rite (or ceremony) of baptism was held outside the doors of the main part of the church, to signify this fact.
The Necessity of Baptism:
Christ Himself ordered His disciples to preach the Gospel to all nations and to baptize those who accept the message of the Gospel. In His encounter with Nicodemus (John 3:1-21), Christ made it clear that baptism was necessary for salvation: "Amen, amen I say to thee, unless a man be born again of water and the Holy Ghost, he cannot enter into the kingdom of God." For Catholics, the sacrament is not a mere formality; it is the very mark of a Christian, because it brings us into new life in Christ.
The Effects of the Sacrament of Baptism:
Baptism has six primary effects, which are all supernatural graces:
1. The removal of the guilt of both Original Sin (the sin imparted to all mankind by the Fall of Adam and Eve in the Garden of Eden) and personal sin (the sins that we have committed ourselves).
2. The remission of all punishment that we owe because of sin, both temporal (in this world and in Purgatory) and eternal (the punishment that we would suffer in hell).
3. The infusion of grace in the form of sanctifying grace (the life of God within us); the seven gifts of the Holy Spirit; and the three theological virtues.
4. Becoming a part of Christ.
5. Becoming a part of the Church, which is the Mystical Body of Christ on earth.
6. Enabling participation in the sacraments, the priesthood of all believers, and the growth in grace.
Biblical references: Acts 2:38-39; Acts 22:16; 1 Peter 3:21; John 3:5; Matt 19:14; Luke 18:15-16; Col 2:11-12; Rom 6:13; Acts 16:15; Acts 16:33; 1 Cor 1:16; Mark 16:16;Rom 5:18-19; Mark 10:14; Jos 24:15; Matt 8:5ff; Matt 15:21ff
