What does the Bible say about circumcision in the New Testament?

In the New Testament, circumcision is addressed as a ceremonial act of the Old Covenant that has been fulfilled in Christ. It served as an outward sign of God's covenant with Israel but is not required for salvation. Paul emphasizes that true circumcision is that of the heart, where believers are spiritually transformed by Christ's work on the cross. He warns against the legalistic imposition of circumcision for salvation, as it's not the physical act but faith in Christ that brings about acceptance with God. In Galatians 6:15, Paul clearly states that neither circumcision nor uncircumcision has any value, but rather a new creation in Christ.