Baptism is introduced in the Gospels when John the Baptist begins his ministry as precursor of Jesus Christ. John's baptism was a baptism of repentance for the Jews; he preached a simple message to the Jews that they should 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 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 settling on him, and, behold, a voice from heaven said, “This is my beloved Son, in whom I am 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 this command. Known as the “Great Commission,” Matthew 28:19 is often cited in attempts to prove the doctrine of the Trinity. As it is often considered one of the few texts that fully demonstrate the Trinity, it forms the basis of what has become 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 the Christian life. God alone 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 persons or dividing substance; for 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, the Son and the Holy Spirit...... middle of paper ......:38)? Retrieved April 1, 2014 from socrates58.blogspot.com: http://socrates58.blogspot.com/2008/03/baptismal-formula-trinitarian-matt-2819.html Canada, TR (October 31, 1998). 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, NY: 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, Michigan: Wm. B. Eerdmans Co. Schaff, P. (1997). History of the Christian Church. Oak Harbor, Washington: Logos Research Systems, Inc. USCCB, British Columbia (2004). Rite of Baptism of Children. New Jersey: Catholic Book Publishing Company.