Circumcision in the Old Testament has baptism as an analog in the New Testament. Both are declarations of allegiance designed to set God's people apart from the other nations. Both play zero role in being elect (many, if not most, circumcised hewbrews apostatized. The surgery did not save them.)

However, the New Testament gives circumcision a shrug, but repeatedly instructs believers to be baptized. There is less than zero reason to get circumcised as a Christian.