As a church one of our statements of faith states:
We believe in water baptism by immersion, and all who repent should be baptized in the name of the Father, and of the Son, and of the Holy Ghost.
Water baptism is an act of obedience that follows conversion to portray symbolically the washing away of our sins. It is an outward sign of an inward change within the Christian.
There are instances in scripture when people experience repeat baptism (Acts 19:1-5).
That was the reason Jesus re-baptized all those John had baptized. John’s baptism was first. He baptized ” unto repentance.” But when Jesus came on the scene, He re-baptized everyone (including all his disciples) in River Jordan.
Today, many Christians frequently change churches. However, we do not require baptism to become a part of our church family.
Sometimes, when an individual slips back into the “worldly lifestyle” or into his or her former lifestyle (backsliding), they may request a re-baptism to represent again an outward sign of an inward change of heart.