Like in many states within the United States of America Christianity influenced the legal system greatly. Mainly because the settlers that first colonized and made these states their home were of Christian faith. This being the case the legal system was created based on what their faith/religion deemed was right and wrong, as well as following the punishments that were represented in their religion. Such as "An eye for an eye".
He referred to the fact that simply baptism of salvation of Christ did not change the acts of people, but that the real act of salvation is dedication to the religious and social movement.