I Confess One Baptism for the Forgiveness of Sins

The Greek word Baptizo means to immerse. Therefore, one must be completely immersed in water. This is done 3 times in the name of the father and the son and the Holy Spirit. Christ himself give that command to the Apostles: Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the son, and of the Holy Spirit, teaching them to observe all things whatsoever I have commanded you.” 

St. John Damascene says “ Now we are baptized into the Holy Trinity because those things which are baptized have need of the Holy Trinity for their maintenance and continuance, and the three subsistences cannot be otherwise than present, the one with the other. For the Holy Trinity is indivisible.

When the bible uses the phrase Baptize in the name of Jesus Christ it is understood that it is still done in the name of the Father and the Son and the Holy Spirit.

John 3:3-6

 “Verily, verily, I say unto thee, except a man be born of the water and Spirit, he cannot enter into the Kingdom of God. That that is born of the flesh is flesh, and that which is born of the Spirit is the spirit.

St. Cyril of Jerusalem (Catechetical Lectures: Lecture 3 no. 4)

When going down, therefore, into the water, think not of the bare element, but look for salvation by the power of the Holy Spirit: for without both you cannot possibly be made perfect. It is not I that say this, but the Lord Jesus Christ, who has the power in this matter: for He says, 'Except a man be born anew', and He adds these words, 'of water and of the Spirit, he cannot enter into the kingdom of God'. 

St. John Chrysostom, Baptismal Instructions

Are we only dying with the Master and are we only sharing in His sadness? Most of all, let me say that sharing the Master's death is no sadness. Only wait a little and you shall see yourself sharing in His benefits. 'For if we have died with Him,' says St. Paul, `we believe that we shall also live together with Him.' For in baptism there are both burial and resurrection together at the same time. He who is baptized puts off the old man, takes the new and rises up, `just as Christ has arisen through the glory of the Father.' Do you see how, again, St. Paul calls baptism a resurrection?