Servant to the circumcision is a name that Paul gave to Jesus (Yeshua‘) because He came first to His own people the Jews. The Jews were marked as a people in covenant with God by the outward sign of circumcision in the flesh. Paul says that God sent Jesus to them first because of His promise to the patriarchs: Abraham, Isaac, Jacob, and others.
In the same passage Paul adds that Jesus also served the Gentiles, though the equivalent title does not occur.
Servant to the circumcision in Greek:
Strong’s Concordance numbers: 1249, 4061
Bible reference: Rom. 15:8
Christ has become a servant to the circumcision on behalf of the truth of God to confirm the promises given to the fathers. (Romans 15:8)
The NIV calls Jesus the Servant of the Jews while the KJV has Minister of the circumcision.