He got a body sign. The sign showed he was right by trust when he had no sign. So he is dad of all who trust with no sign. God will call them right too. ✅
And he received the sign of circumcision as a seal of the righteousness that he had by faith while he was still uncircumcised. So then, he is the father of all who believe but are not circumcised, in order that righteousness might be credited to them.
KJV
And he received the sign of circumcision, a seal of the righteousness of the faith which [he had yet] being uncircumcised: that he might be the father of all them that believe, though they be not circumcised; that righteousness might be imputed unto them also:
ASV
and he received the sign of circumcision, a seal of the righteousness of the faith which he had while he was in uncircumcision: that he might be the father of all them that believe, though they be in uncircumcision, that righteousness might be reckoned unto them;
And he is also the father of the circumcised who not only are circumcised, but who also walk in the footsteps of the faith that our father Abraham had before he was circumcised.
KJV
And the father of circumcision to them who are not of the circumcision only, but who also walk in the steps of that faith of our father Abraham, which [he had] being [yet] uncircumcised.
ASV
and the father of circumcision to them who not only are of the circumcision, but who also walk in the steps of that faith of our father Abraham which he had in uncircumcision.
For the promise to Abraham and his offspring that he would be heir of the world was not given through the law, but through the righteousness that comes by faith.
KJV
For the promise, that he should be the heir of the world, [was] not to Abraham, or to his seed, through the law, but through the righteousness of faith.
ASV
For not through the law was the promise to Abraham or to his seed that he should be heir of the world, but through the righteousness of faith.