is Baptism just symbol only or was Jesus talking about something more? I think there's more to Baptism and based on the Bible, Church history and tradition we can get a pretty good idea of what baptism is and means for our salvation. Here's a mini study article from my study Bible to wet your appetite and get your thinking caps on and to research more for yourself!
"The New Birth"
"Early in His ministry, Jesus revealed the way to enter God's eternal Kingdom. We must be "born again" (Jn. 3:3), a birth from above realized by water and the Spirit. In His conversation with Nicodemus, Christ states, "Unless one is born of water and the Spirit, he cannot enter the kingdom of God"(Jn. 3:5). From the beginning, the Church has recognized the "water" to be the water of baptism, "the Spirit" to be the Holy Spirit. Therefore, the new birth consists of being joined to Christ in the water of baptism and receiving the Holy Spirit through anointing or "chrismation." Salvation, then, is more than forgiveness of sins, more than a mental acceptance of Christ and His teachings. For in salvation we are given union with God through Christ, a right and full relationship with the Holy Trinity, and the restoration of our full humanity. All these things are accomplished through the Incarnation, the union of God and man in the Person of Jesus Christ. Salvation, then, is founded on a substantial union of the believer with Christ in His full humanity, a flesh-to-flesh relationship. Paul likens it to the joining of husband and wife (Eph. 5:23-32). Throughout their epistles, the apostles remind us the new birth is necessary for salvation. We die to sin, then, buried with Christ and risen with Him, we are united to Christ and to His body, the Church. We are cleansed, justified, and sanctified-all in baptism, "the washing of regeneration and renewing of the Holy Spirit" (titus 3:5). Without our repentance and faith, however, immersion in water would be of no effect. Some Christians bypass baptism and stress only faith. Why is the mystery of the water necessary? Because just as Christ actually died on a cross, was buried, and rose again-all through His faith and God's grace-so we must actually be immersed in the sacramental waters of baptism, made effectual through our faith and God's grace. The basic form of baptism is simple. The person to be born again, joined to Christ, is immersed in the water three times in the name of the Father and of the Son and of the Holy Spirit (see Matt. 28:19). The first-century Didache teaches, "If you do not have running water use whatever is available. And if you cannot do it in cold water, use warm. But if you have neither, pour water on the head three times-in the name of the Father, Son and Holy Spirit." In the new birth, a true mystery takes place. For in the sacrament of baptism, we die, going down into the water to be mystically united to Christ in His death, and we live again, rising up out of the water in His resurrected humanity. In short, we are born again."