1 Corinthians 7:18

Is any man called being circumcised? let him not become uncircumcised Many Jews, we are assured, were ashamed of their Judaism, and were desirous to obliterate all the outward signs of it. (1Ma 1:15.) This feeling would receive an additional impulse from conversion to Christianity. But St Paul believed that, once a Jew, a man was -a debtor to do the whole law" (Galatians 5:3). He acted upon this view of the case himself (Acts 18:21; Acts 21:26) in marked contrast to the Judaizing teachers (Galatians 6:13), but with one exception under special circumstances (Acts 16:3). Therefore he urged those who were called in Judaism not to abandon the customs of their nation.

Is any called in uncircumcision? That the Gentiles were free from the obligation of the Jewish law was decided in the conference held at Jerusalem (Acts 15) and after some wavering (Galatians 2:11-21) it was set at rest, principally by the courage and clear-sightedness of the great Apostle of the Gentiles.