Baptism by immersion (completely immersing a person under water) is a physical picture of a spiritual truth. It is a person declaring they left the old way of living and now they choose to live for Jesus Christ.
The Apostle Paul said; "Do you not know that all of us who have been baptized into Christ Jesus were baptized into his death? We were buried therefore with him by baptism in to death, in order that, just as Christ was raised from the dead by the glory of the Father we too might walk in the newness of life" (Romans 6:2-4 ESV). Baptism is a person's declaration that they are now "walking in the newness of life."
Baptism is an obedient response to following Jesus Christ. As people take this step, they move through our simple process of becoming more spiritually mature through Worship, Community and Serving God in the church and in the world.