At the baptism of Jesus there is proof of the oneness of God

Matthew 3:13-17

The miraculous baptism of Jesus. During the baptism of Jesus we find that God is saying, in so many words, he is in Jesus. 17th Verse. And lo a voice from heaven, saying, This is my beloved Son, in whom I am well pleased. Jesus can say that my Father and I are one, meaning the same because God is in Jesus Christ based on John 1:1, 14, 14:8-11, and Colossians 1:14-19, 2:9.

The Spirit and the Flesh is one God. Therefore, Jesus is God, for the Father is in Jesus. This scripture blends with and verifies II Corinthians 5:19. God tells us again that he is in Christ reconciling the world unto himself. In Matthew, we can see the three manifestations of the one God. We see the Holy Spirit represented by a dove, The Son in baptism, and we hear the voice of the Father in his Spirit form. Some might say, you see, there are three persons. This is not true. What you see and hear are three manifestations of the one God.

This demonstration is for John, his disciples and the multitude. This also demonstrates that Jesus and the Father are one (John 10:30, Colossians 1:14-19, 2:9). The purpose is to clarify that Jesus is his Son and he is well please to be in him (II Corinthians 5:19). This is not a demonstration to prove that God is three persons nor three separate personalities.

God is showing us at the baptism of “Christ” that he will operate in three different manifestations for the salvation of man and these three manifestations will be in the body of Christ (Colossians 1:14-19, 2:9).
 
This is an edited excerpt from my book, "Understanding the Trinity, Three Persons vs Three Manifestations.  To order call 1-888-280-7715.