Baptism is introduced into the Gospels when John the Baptist begins his ministry as a precursor of Jesus Christ. John's baptism was a baptism of repentance for the Jews; preached a simple message to the Jews telling them that they must repent of their sins in preparation for the Kingdom of God and the coming of the Messiah. In Matthew 3:13-17, Jesus goes down to the Jordan River to be baptized by John. After being baptized, Jesus immediately came out of the water; and behold, the heavens were opened, and he saw the Spirit of God descending like a dove and shining upon Him, and behold, a voice from heaven said, “This is my beloved Son, in whom I am well pleased. “At the end of his earthly ministry, Jesus commanded his disciples: “Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit.” As soon as they received the Holy Spirit at Pentecost, the disciples began to carry out that order. Known as the “Great Commission,” Matthew 28:19 is often cited in an attempt to prove the doctrine of the Trinity. Because it is often considered one of the few texts that fully demonstrate the Trinity, it provides the basis for what became known as the Trinitarian baptismal formula. The greatest revealed mystery of the Christian faith is the Trinity; it is the central mystery of the Christian faith and Christian life. Only God makes him known to us by revealing himself as Father, Son and Holy Spirit. As Roman Catholics, “we worship one God in the Trinity and the Trinity in unity, without confusing people or dividing substance; since the person of the Father is one, that of the Son is another, that of the Holy Spirit is another; but the Divinity of the Father, of the Son and of the Holy Spirit...... in the center of the sheet......:38)? Retrieved April 1, 2014, from socrates58.blogspot.com: http://socrates58.blogspot.com/2008/03/baptismal-formula-trinitarian-matt-2819.htmlCanada, T. R. (1998, October 31). In whose name? The baptismal formula in contemporary culture. Retrieved April 1, 2014, from www.united-church.ca: http://www.united-church.ca/files/partners/relations/ecumenical/report_rc_01.pdfEmery, G. (2007). The Trinitarian theology of Saint Thomas Aquinas. New York, New York: Oxford University Press Inc. Farrelly, M. J. (2005). The Trinity. Lanham, Maryland: Rowman & Littlefield Publishers Inc. Mikoski, G. S. (2009). Baptism and Christian identity. Grand Rapids, MI: Wm. B. Eerdmans Co. Schaff, P. (1997). History of the Christian Church. Oak Harbor, WA: Logos Research Systems, Inc. USCCB, BC (2004). Rite of baptism of children. New Jersey: Catholic Book Publishing Corp.