Circumcision in Old Testament, New Testament and today

This study presents the biblical and the today ritual of circumcision,
developing analytical three verses of the Old Testament:
first, we considered the commandment of God on the practice
of circumcision as a sign of His covenant with each man of
the Hebrew people (Genesis 17, 9-10), then we analyzed the oldest
biblical text related to circumcision: Exodus 4, 24-26, and thirdly,
we considered the symbolic meaning of the ritual described in
Deuteronomy 10, 16. In the New Testament, in Romans 2, 25-29, Saint
Paul showed the uselessness of circumcision for those who are
part of the Law of Grace.