Reflection by Paul on the baptism we shared at the easter vigil: consider the baptism of Jesus Mt. 3:13-17
Then Jesus came from Galilee to John at the Jordan to be baptized by him. John tried to prevent him, saying, “I need to be baptized by you, and yet you are coming to me?” Jesus said to him in reply, “Allow it now, for thus it is fitting for us to fulfill all righteousness.” Then he allowed him. After Jesus was baptized, he came up from the water and behold, the heavens were opened [for him], and he saw the Spirit of God descending like a dove [and] coming upon him. And a voice came from the heavens, saying, “This is my beloved Son, with whom I am well pleased.I believe that the following quote from Crossing the Tiber by Stephen Ray reveals to us the power we feel when sharing in he baptism at the vigil:
At the moment of of the catechumen's baptism, the three persons of the Trinity work their grace upon the new believer: Jesus in redemption through his propitiatory sacrifice, the Spirit in regeneration, and the Father in declaring us righteous in adopting us as his sons.