Galatians 6:17

Let no man trouble me, either with questions about circumcision, or with imputations as if I were a friend to their opinion, of the necessity of adding to the doctrine of faith, circumcision and other observances of the law. For I bear in my body the marks of the Lord Jesus; I sufficiently declare my judgment to the world, suffering for my profession, and preaching the gospel. These sufferings he calls the marks of the Lord Jesus, because he endured them in testimony to the gospel, as well against the Jews its against the Gentiles.