Narrated in each of the four Gospels, the baptism of Jesus marks the inauguration of His public ministry — His emergence from a life of seeming obscurity into a life of growing popularity on account of His preaching, miracles, healings and proclamation of mercy and forgiveness.
Jesus steps into the Jordan River and into His mission of redemption through this public religious act. The descent of the dove symbolizes the anointing of the Holy Spirit, which Jesus receives as the Christ, Greek for “the Anointed One.”
This mark of divine blessing is accompanied by the voice of the Father in heaven who proclaims, “This is my beloved Son, with whom I am well pleased” (Mt 3:17). This mysterious utterance reveals Jesus as the Son of God, the One sent from the Father to accomplish the salvation of the human race. In this dramatic scene we already grasp the identity and function of the Most Blessed Trinity — we see the Father as the One who begets and sends the Son to redeem the human race, the Son as the obedient servant who accomplishes the will of the Father, and the Holy Spirit as the Sanctifier who empowers the mission of redemption.
Already at the beginning of His ministry, Jesus’ fundamental identity is situated in this Trinitarian relationship. In the early Church, the visit of the Magi, the baptism of the Lord and the miracle at Cana together constituted the meaning of Epiphany, for each of these three events reveals, manifests and unveils who Jesus is.