Romans 4:9, 11, 13, 22

Is this blessing then on the circumcised, or on the uncircumcised also? For we say, “FAITH WAS CREDITED TO ABRAHAM AS RIGHTEOUSNESS.”

and he received the sign of circumcision, a seal of the righteousness of the faith which he had while uncircumcised, so that he might be the father of all who believe without being circumcised, that righteousness might be credited to them

For the promise to Abraham or to his descendants that he would be heir of the world was not through the Law, but through the righteousness of faith.

Therefore IT WAS ALSO CREDITED TO HIM AS RIGHTEOUSNESS.