Under the Old Abrahamic Covenant, only males were circumcised. The Church, following St. Paul, taught that the Spirit had lead them to teach that males and females would receive the circumcision of baptism.“In him you were also circumcised with a circumcision not administered by hand, by stripping off the carnal body, with the circumcision of Christ. You were buried with him in baptism, in which you were also raised with him through faith in the power of God, who raised him from the dead.” Col. 2:11-12.
After significant argument, the early Church decided that Christians need only be baptized to enter the covenant through Christ. Gal. 2 This was a significant departure from the law of Israel.For through faith you are all children of God in Christ Jesus. For all of you who were baptized into Christ have clothed yourselves with Chris t. There is neither Jew nor Greek, there is neither slave nor free person, there is not male and female; for you are all one in Christ Jesus . And if you belong to Christ, then you are Abraham’s descendant, heirs according to the promise. Gal. 3:27-29.
We baptize because the Lord commanded it like God commanded Abram to be circumcised. How then to explain it all?“Go, therefore, and make disciples of all nations, baptizing them in the name of the Father, and of the Son, and of the holy Spirit.”