Romans 4:9 Does this blessedness then come upon the circumcised only, or upon the uncircumcised also? For we say that faith was accounted to Abraham for righteousness. 10 How then was it accounted? While he was circumcised, or uncircumcised? Not while circumcised, but while uncircumcised. 11 And 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, 12 and the father of circumcision to those who not only are of the circumcision, but who also walk in the steps of the faith which our father Abraham had while still uncircumcised.

There is a lot of information that could easily be confusing in this section. The Jews wanted all gentiles to be circumcised, because they believe that was the key to salvation and following the law.

Paul is trying to correct this.
Faith, not circumcision, is the vital link to Abraham. It is far more important to have Abraham’s faith (and the righteousness imputed to him because of it) than it is to have Abraham’s circumcision.

If we walk in the faith that Abraham walked in, we will receive the blessing he received.