Romans 4:11

And he received the sign of circumcision, as a seal of the righteousness of the faith which he had when uncircumcised: that he might be the father of all those who believe, though uncircumcised; that to them also the righteousness might be imputed:

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, as a seal of the righteousness of the faith which he had when uncircumcised: that he might be the father of all those who believe, though uncircumcised; that to them also the righteousness might be imputed:
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, as a seal of the righteousness of the faith which he had when uncircumcised: that he might be the father of all those who believe, though uncircumcised; that to them also the righteousness might be imputed: