Along the River Jordan in Palestine, Jesus was baptized by St. John the Baptist. Baptism is the first Christian Sacrament and is the pouring of water over one’s head. Baptism cleanses the receivers of their sins, including Original sin, and the welcomes them into the Christian Church. The Baptism of Jesus is the first Baptism mentioned in the Bible, thus instilling the sacrament, and giving Christian’s an example that is still followed today. Jesus' Baptism is also the first time the Trinity (The Father, The Son and The Holy Spirit) is seen all together in the Bible. All three persons of God were present at the Baptism, showcasing the significance of the event. As Jesus was baptized the heavens opened up, a dove (the Holy Spirit) came down and rested on Jesus, and the Father's voice was heard from the Heavens. 

Source: https://www.compellingtruth.org/Jesus-baptized.html

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