Salvation by grace through faith is Paul's gospel, and it's as basic as you can get. No rites rituals or performing by the hands of any man. It can only
be performed by the Holy Spirit at our salvation, as He baptises us into the body of Christ.
It's a part of the Operation of God,
performed by God, the Holy Spirit. Circumcision WITHOUT HANDS, buried WITH HIM in baptism (also without hands), and risen WITH HIM through faith (also without hands).
Only the believer and God need be present for this Operation.
Colossians 2:11-13
11 In whom also ye are circumcised with the circumcision made without hands, in putting off the body of the sins of the flesh by the circumcision of Christ: 12 Buried with him in baptism, wherein also ye are risen with him through the faith of the operation of God, who hath raised him from the dead. 13 And you, being dead in your sins and the uncircumcision of your flesh, hath he quickened together with him, having forgiven you all trespasses;