Römer 2:25

For circumcision--that is, One's being within the covenant of which circumcision was the outward sign and seal. verily profiteth, if thou keep the law--if the inward reality correspond to the outward sign. but if, &c.--that is, "Otherwise, thou art no better than the uncircumcised heathen."

The scope of the first two chapters of this epistle may be gathered from Rom 3:9, "We have before proved both Jews and Gentiles that they are all under sin." This we have proved upon the Gentiles (ch. 1), now in this chapter he proves it upon the Jews, as appears by Rom 2:17, "thou art called a Jew." I. He proves in general that Jews and Gentiles stand upon the same level before the justice of God, to Rom 2:11. II. He shows more particularly what sins the Jews were guilty of, notwithstanding their profession and vain pretensions (Rom 2:17 to the end).

2:25 God instituted the Jewish ceremony of circumcision as a sign of his covenant with Abraham; it was to be performed on every male Israelite child (Gen 17:9-13; see Rom 4:11). Circumcision therefore represents God’s covenant with his people Israel. The rite took on greater significance during the intertestamental period when the pagan king Antiochus IV Epiphanes tried to stamp out the Jewish faith by forbidding circumcision and other Jewish practices. The Jews resisted in the famous Maccabean Revolt (166–160 BC). After they restored the worship of the Lord in Israel, the Jews regarded circumcision as a highly prized mark of Jewish loyalty in the midst of a pagan culture.