Baptism is an “outward expression of an inward change.” It is a symbolic act of obedience to Christ, identifying the Believer with their Lord, and giving testimony to the inner spiritual change that has taken place when the Believer put their faith, trust and hope in Christ.
Baptism serves as a public testimony that the Believer has been ‘born again’ (John 3:3). It is not a magical rite, nor does it produce any spiritual change in the one baptized; it is simply an act of obedience to Christ who commanded His followers be baptized.