Baptism by immersion symbolically represents the new life we have through the death, burial, and resurrection of Jesus Christ.
What is baptism?
Water baptism is a "non-essential" regarding our salvation and it does not improve our standing with God. We are baptized spiritually into the body of Christ when we receive Jesus as our Lord and Savior. As a "declaration of dependence" on Jesus as Lord, water baptism is an opportunity for believers to publicly identify with Jesus, and serves as an outward confession of an inward change.