It is through the sacrament of baptism that we enter into the Christian life. Baptism is the ‘gateway to life in the Spirit and the door which gives access to the other sacraments’ (Catechism of the Catholic Church #1213).
Christian baptism must involve the immersing or pouring of water and the invocation of the Trinity – Father, Son and Holy Spirit. As long as the baptism has been performed in this way, it is not necessary for a person to be baptised a second time. This is especially important for those Christians who are seeking to become a Catholic as an adult.
Catholics believe that “baptism imprints on the soul an indelible spiritual sign, which consecrates the baptised person as belonging to Christ. Because of this, Baptism cannot be repeated.” (Catechism of the Catholic Church #1272 & #1280)
Baptism photo on Lightstock
14 October 2019