Conservative leaders, scholars, and denominations in Reformed, Presbyterian, and Calvinist churches typically adhere to the Westminster Confession of Faith. They claim to follow the scriptures very carefully and closely, yet they sprinkle newborn babies without faith as if such sprinkling were baptism. Though they agree that there is no explicit New Testament command or example to justify this practice, they try to infer it from a system they have developed known as Covenant Theology (CT).
CT holds that all the biblical covenants (with Adam, Noah, Israel, David, etc.) are essentially one, and so they must all have the same parallel components. Of course, one component of the Mosaic covenant was a sign – namely, circumcision – to show that each newborn son belonged to a covenant family and community.
So, according to CT, there must be a corresponding component to circumcision in the new covenant. CT advocates then determined, even without one clear biblical command, statement, or example, that New Testament baptism corresponds to Old Testament circumcision. Since babies were circumcised, babies are to be baptized.
Does Covenant Theology Justify Infant Baptism?
Having viewed a CT presentation on this subject several times, I want to consider the New Testament scriptures that the CT speaker presented.
Acts 2:39
Acts 2:39 “For the promise is for you and your children and for all who are far off, as many as the Lord our God will call to Himself.”
CT claims that the words “and your children” imply infant baptism. That cannot be. The “promise” offered, according to Acts 2:36-38, was for sinners who were called to repent and only then to be baptized for (unto) the forgiveness of their sins. Let’s read on.
Acts 2:40 And with many other words he solemnly testified and kept on exhorting them, saying, “Be saved from this perverse generation!”
The message to convicted Jews at Pentecost was not, “Bring your babies to be baptized to mark them as members of the covenant to which you belong.” It was rather, “You yourselves must obey this command in order to be saved.”
Acts 2:41 So then, those who had received his word were baptized; and that day there were added about three thousand souls.
No babies were baptized that day. If CT were correct, wouldn’t the parents have brought their babies forward to be baptized? That’s not what happened. Only “those who had received his word” were baptized. No babies.
Interestingly enough, these CT advocates will not sprinkle an adult unless that adult first makes a profession of faith (like Abraham). Faith is impossible for babies, but it is required of adults before they are sprinkled (like the infant Isaac).
Ephesians 1:1; 6:1
The CT speaker inferred that, since Eph 1:1 is addressed to the whole church (“to the saints at Ephesus”), and since Eph 6:1 is addressed to children (“Children, obey your parents …”), newborn babies must have been “members” of the church community and therefore baptized.
This cannot be correct, first because the New Testament never calls babies “saints”. According to Eph 1:13, in the same context, people became saints after they had heard the gospel and believed it. Second, the children mentioned in Eph 6:1 were told to obey their parents in the Lord. Newborn babies would be unable to understand or respond to such instructions. Rather, these were children who were able to obey their parents and therefore able also to obey the Lord.
Romans 4:11
Rom 4:11 … and he received the sign of circumcision, a seal of the righteousness of the faith which he had while uncircumcised, so that he might be the father of all who believe without being circumcised, that righteousness might be credited to them …
No doubt, Abraham was credited with righteousness before he was circumcised (Gen 15:6; 17:24). His circumcision was a sign and seal of that prior justification. But the New Testament never refers to baptism as a “sign” or a “seal” or as an event that follows one’s reception of salvation. Review what we noted in Acts 2 above.
Colossians 2:9-15
Only in this text, and nowhere else, does the Lord mention circumcision and baptism together. There is no mention of babies, but rather Gentiles who had been dead in their personal sins (2:13) lost and who were now saved. These Gentiles, who of course were physically uncircumcised (2:13), became “circumcised” through the finished work of Christ and their identification with Him. This “circumcision” took place when they were buried (immersed, not sprinkled) with Christ in baptism (Rom 6:1-4) and raised with Him through their own personal faith.
Circumcision and baptism are similar only in one sense, in that something was removed. In circumcision, skin was removed. In baptism, as an expression of personal faith in the grace of God and the cross of Christ, personal sin was removed. Since this circumcision with Christ, this union with Christ in baptism, involved personal faith (2:12), it is simply impossible to read newborn babies into this text.
Since Old Testament circumcision was only for males, CT advocates must take another step to “authorize” the sprinkling of baby girls. They may pull in Galatians 3:28 (“neither male for female”) and say that the new covenant “expands” the parallel with circumcision. Of course, Galatians 3:28 follows 3:26-27, a text which once again insists that baptism is an expression of personal faith.
As a consequence of placing baptism before faith (contrary to Mark 16:16), CT advocates have chosen to add other practices not taught in scripture. One is the need for a profession of faith (similar to Catholic confirmation) and a first communion after that profession. CT advocates admit that this after-baptism profession is not found in scripture. (It couldn’t be, because New Testament baptism was always the expression of prior faith and repentance – Acts 2:38). So, CT requires faith before communion, but not before baptism. Babies are to be baptized but not to observe the Lord’s Supper.
See a related post here. https://serving-and-sharing.blogspot.com/2025/12/the-westminster-confession-of-faith.html

