Romans 4:11

And he received the sign of circumcision, and the seal of the righteousness of the faith which he had in uncircumcision: that he should be the father of all who believed, through uncircumcision; and righteousness should be imputed to them;

Acts 7:8

And He gave him the covenant of circumcision; and so he begat Isaac, and circumcised him on the eighth day; and Isaac, Jacob; and Jacob, the twelve patriarchs.

Treasury of Scripture Knowledge

Summary

And ye shall circumcise the flesh of your foreskin; and it shall be a token of the covenant betwixt me and you.

Bible References

A token

Acts 7:8
And He gave him the covenant of circumcision; and so he begat Isaac, and circumcised him on the eighth day; and Isaac, Jacob; and Jacob, the twelve patriarchs.
Romans 4:11
And he received the sign of circumcision, and the seal of the righteousness of the faith which he had in uncircumcision: that he should be the father of all who believed, through uncircumcision; and righteousness should be imputed to them;
Acts 7:8
And He gave him the covenant of circumcision; and so he begat Isaac, and circumcised him on the eighth day; and Isaac, Jacob; and Jacob, the twelve patriarchs.
Romans 4:11
And he received the sign of circumcision, and the seal of the righteousness of the faith which he had in uncircumcision: that he should be the father of all who believed, through uncircumcision; and righteousness should be imputed to them;