Baptism
This sacrament is primarily called Baptism because of the central rite with which it is celebrated. To baptize means to "immerse" in water. The one who is baptized is immersed into the death of Christ and rises with him as a "new creature" (2 Corinthians 5:17). This sacrament is also called the "bath of regeneration and renewal in the Holy Spirit" (Titus 3:5), and it is called"enlightenment" because the baptized becomes "a son of light" (Ephesians 5:8).
Everyone who is to be baptized is required to make a profession of faith. This is done personally in the case of an adult or by the parents and by the Church in the case of infants. Also, the godfather or the godmother and the whole ecclesial community share the responsibility for baptismal preparation (catechumenate) as well as for the development and safeguarding of the faith and grace given at baptism.
13 Then Jesus arrived from Galilee and came to John at the Jordan to be baptized by him. 14 John tried to dissuade him, saying, “Why do you come to me? I am the one who needs to be baptized by you.” 15 But Jesus said to him in reply, “For the present, let it be thus. It is proper for us to do this to fulfill all that righteousness demands.” Then he acquiesced.
16 After Jesus had been baptized, as he came up from the water, suddenly the heavens were opened and he beheld the Spirit of God descending like a dove and alighting on him. 17 And a voice came from heaven, saying, “This is my beloved Son, in whom I am well pleased.”
Matthew 3:13-17