Now is this blessing for the circumcised only? Or is it also for the uncircumcised? For we say that Avraham's trust was credited to his account as righteousness;
but what state was he in when it was so credited - circumcision or uncircumcision? Not in circumcision, but in uncircumcision!
In fact, he received circumcision as a sign, as a seal of the righteousness he had been credited with on the ground of the trust he had while he was still uncircumcised. This happened so that he could be the father of every uncircumcised person who trusts and thus has righteousness credited to him,
and at the same time be the father of every circumcised person who not only has had a b'rit-milah, but also follows in the footsteps of the trust which Avraham avinu had when he was still uncircumcised.