Circumcision was peculiarly, though not exclusively, a Jewish rite. It was enjoined upon Abraham, the father of the nation, by God, at the institution and as the token of the covenant, which assured to him and his descendants the promise of the Messiah. Gen. 17. It was thus made a necessary condition of Jewish nationality. Every male child was to be circumcised when eight days old. Lev. 12:3, on pain of death. The biblical notice of the rite describes it as distinctively Jewish; so that in the New Testament “the circumcision” and “the uncircumcision” are frequently used as synonyms for the Jews and the Gentiles. The rite has been found to prevail extensively in both ancient and modern times. Though Mohammed did not enjoin circumcision in the Koran, he was circumcised himself, according to the custom of his country; and circumcision is now as common among the Mohammedans as among the Jews. The process of restoring a circumcised person to his natural condition by a surgical operation was sometimes undergone. Some of the Jews in the time of Antiochus Eiphanes, wishing to assimilate themselves to the heathen around them, “made themselves uncircumcised.” Against having recourse to this practice, from an excessive anti-Judaistic tendency, St. Paul cautions the Corinthians. 1 Chron. 7:18.