Baptism
BAPTISM
The first three sacraments are Baptism, Confirmation, and Eucharist. They are called the “Sacraments of Initiation”. We are reborn in Baptism, strengthened by the sacrament of Confirmation, and receive in the Eucharist the food of eternal life. (CCC #1212) Holy Baptism is the basis for all Christian life, the gateway to the life in the Spirit. It is also the door which gives access to all other sacraments. Without Baptism one cannot receive any other sacrament.
Baptism is only given once. It imprints in the soul an indelible spiritual mark, the “character”, which is the sign of Jesus Christ.
(CCC #1304)
Read More: Catechism of the Catholic Church (1213-1284)

