This is the 5th post in a series titled “In Defense of.” Check out part 1, part 2, part 3, and part 4.  Baptismal regeneration is the process through which the Holy Spirit makes the recipient of the sacrament of baptism a new creation by forming a covenant. whereby . This is different from conversion, where someone repents of their sins and has faith in God (i.e. the thief on the cross next to Jesus).