Romans 4:9-11

9Does this blessedness then come upon the circumcised only, or upon the uncircumcised also? For we say that faith was accounted to Abraham for righteousness.

10How then was it accounted? While he was circumcised, or uncircumcised? Not while circumcised, but while uncircumcised.

11And he received the sign of circumcision, a seal of the righteousness of the faith which he had while still uncircumcised, that he might be the father of all those who believe, though they are uncircumcised, that righteousness might be imputed to them also,