What is baptism a sign of? Brief background. I'm a lifelong baptist who has been attending a Presbyterian church for the past 2.5 years and finally taking the time to really investigate baptism. Well before starting to attend a Presbyterian church, I knew I needed to understand both sides of the debate, but I had other areas I believed were more important to properly understand first. One point a Paedobaptist brother brought up which I found surprisingly strong is in Rom. 4:11: And he received circumcision as a sign, a seal of the righteousness that he had by faith while he was still uncircumcised. It sound like Paul is coming dangerously close to saying that circumcision is a sign of faith, just like baptism. Logically, if the OT sign of faith (circumcision) is clearly to be applied to infants, then the NT sign should be also. What is the baptist response to this point?